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Kristian Seip

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Kristian Seip

Professor
Department of Mathematical Sciences

kristian.seip@ntnu.no
+4773593516 +4791129136 Sentralbygg 2, 956, Gløshaugen, Alfred Getz vei 1
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About

Kristian Seip (1962) is a Professor at the Department of Mathematical Sciences since 1993. He has been Department Chair (1997 – 2001) and Vice Dean for Education at the Faculty of Information Technology, Mathematics and Electrical Engineering (2006 – 2012). He is a member of the Analysis Group. Professor Seip has a MSc, and a PhD both from NTNU. His research areas are analysis and analytic number theory.

Fellowships/memberships

  • Academia Europeae, elected member 2025
  • Inaugural Fellow of the American Mathematical Society 2012
  • The Norwegian Academy of Science and Letters (DNVA), elected member 2005
  • The Royal Norwegian Society of Sciences and Letters (DKNVS), elected member 2001
  • Norwegian Academy of the Technological Sciences (NTVA), elected member 1999

Honors and Awards

  • Frontiers of Science Award for the paper "Large Greatest Common Divisor Sums and Extreme Values of the Riemann Zeta Function" (shared with Andriy Bondarenko) 2024
  • Doctor Honoris Causa from Universitat de Barcelona 2024
  • European Mathematical Society Lecturer 2012
  • Invited Speaker International Congress of Mathematicians 1998

Leadership of research projects with external funding

  • Co-leader (with Yurii Lyubarskii) of the 2012–2013 program “Operator-Related Function Theory and Time-Frequency Analysis”, Centre for Advanced Study, Norwegian Academy of Science and Letters, Oslo
  • PI of several projects funded by the Research Council of Norway (RCN), including “Nonlinear Problems in Mathematical Analysis” (2008–2013), “Dirichlet Series and Analysis on Polydiscs” (2013–2018), the FRIPRO/Toppforsk project "Combinatorial Methods in Analysis" (2018–2022), and the FRIPRO project "Fourier Methods and Multiplicative Analysis" (2023-2028).
  • Node Coordinator of EU Research Training Network “Classical Analysis, Operator Theory, Geometry of Banach Spaces, Their Interplay and Their Applications”, 2000–2004.  

Publications

  • Chronological
  • By category
  • All publications registered in NVA

2026

  • Bampouras, Konstantinos; Perfekt, Karl-Mikael; Seip, Kristian. (2026) Hankel Operators on Hardy and Paley-Wiener spaces and the accumulated Möbius distortion. Norges teknisk-naturvitenskapelige universitet
    Doctoral thesis
  • Bondarenko, Andrii; Ortega-Cerdà, Joaquim; Radchenko, Danylo; Seip, Kristian. (2026) The Hörmander--Bernhardsson Extremal Function: A Preliminary Study.
    Academic chapter
  • Brevig, Ole Fredrik; Llinares, Adrián; Seip, Kristian. (2026) Critical Exponents of the Riesz Projection. Computational methods in Function Theory
    Academic article

2024

  • Brevig, Ole Fredrik; Chirre, Andrés; Ortega-Cerdà, Joaquim; Seip, Kristian. (2024) Point evaluation in Paley–Wiener spaces. Journal d'Analyse Mathematique
    Academic article
  • Brevig, Ole Fredrik; Seip, Kristian. (2024) The norm of the backward shift on H1 is 2/sqrt(3). Pure and Applied Functional Analysis
    Academic article
  • Brevig, Ole Fredrik; Seip, Kristian. (2024) Maximal norm Hankel operators. Journal of Mathematical Analysis and Applications
    Academic article

2023

  • Brevig, Ole Fredrik; Ortega-Cerdà, Joaquim; Seip, Kristian. (2023) Hilbert points in Hardy spaces. St. Petersburg Mathematical Journal
    Academic article
  • Bondarenko, Andrii; Darbar, Pranendu; Hagen, Markus Valås; Heap, Paul Winston; Seip, Kristian. (2023) A dichotomy for extreme values of zeta and Dirichlet L-functions. Bulletin of the London Mathematical Society
    Academic article

2022

  • Bondarenko, Andrii; Radchenko, Danylo; Seip, Kristian. (2022) Fourier Interpolation with Zeros of Zeta and L-Functions. Constructive approximation
    Academic article
  • Konyagin, Sergei; Queffelec, Herve; Saksman, Eero; Seip, Kristian. (2022) Riesz projection and bounded mean oscillation for Dirichlet series. Studia Mathematica
    Academic article

2021

  • Brevig, Ole Fredrik; Ortega-Cerdà, Joaquim; Seip, Kristian. (2021) Idempotent Fourier multipliers acting contractively on H^p spaces. Geometric and Functional Analysis
    Academic article
  • Brevig, Ole Fredrik; Ortega-Cerdà, Joaquim; Seip, Kristian. (2021) A converse to the Schwarz lemma for planar harmonic maps. Journal of Mathematical Analysis and Applications
    Academic article

2020

  • Saias, Eric; Seip, Kristian. (2020) A footnote to a theorem Halász. Functiones et Approximatio Commentarii Mathematici
    Academic article
  • Seip, Kristian. (2020) Universality and distribution of zeros and poles of some zeta functions. Journal d'Analyse Mathematique
    Academic article

2019

  • Brevig, Ole Fredrik; Perfekt, Karl-Mikael; Seip, Kristian. (2019) Volterra operators on Hardy spaces of Dirichlet series. Journal für die Reine und Angewandte Mathematik
    Academic article
  • Bondarenko, Andrii; Brevig, Ole Fredrik; Saksman, Eero; Seip, Kristian. (2019) Linear space properties of H^p spaces of Dirichlet series. Transactions of the American Mathematical Society
    Academic article

2018

  • Gesztesy, Fritz; Hanche-Olsen, Harald; Jakobsen, Espen Robstad; Lyubarskii, Yurii; Risebro, Nils Henrik; Seip, Kristian. (2018) Non-linear Partial Differential Equations, Mathematical Physics, and Stochastic Analysis: The Helge Holden Anniversary Volume. European Mathematical Society (EMS) Press
    Anthology
  • Bondarenko, Andrii; Brevig, Ole Fredrik; Saksman, Eero; Seip, Kristian; Zhao, Jing. (2018) Pseudomoments of the Riemann zeta function. Bulletin of the London Mathematical Society
    Academic article
  • Brevig, Ole Fredrik; Ortega-Cerdà, Joaquim; Seip, Kristian; Zhao, Jing. (2018) Contractive inequalities for Hardy spaces. Functiones et Approximatio Commentarii Mathematici
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2018) Note on the resonance method for the Riemann zeta function. Operator Theory: Advances and Applications
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2018) Extreme values of the Riemann zeta function and its argument. Mathematische Annalen
    Academic article

2017

  • Bondarenko, Andrii; Seip, Kristian. (2017) Large greatest common divisor sums and extreme values of the Riemann zeta function. Duke mathematical journal
    Academic article

2016

  • Bondarenko, Andrii; Hilberdink, Titus; Seip, Kristian. (2016) Gal-type GCD sums beyond the critical line. Journal of Number Theory
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2016) Helson's problem for sums of a random multiplicative function. Mathematika
    Academic article
  • Bayart, Frederic; Queffelec, Herve; Seip, Kristian. (2016) Approximation numbers of composition operators on H^p spaces of Dirichlet series. Annales de l'Institut Fourier
    Academic article
  • Saksman, Eero; Seip, Kristian. (2016) Some open questions in analysis for Dirichlet series.
    Academic chapter
  • Brevig, Ole Fredrik; Perfekt, Karl-Mikael; Seip, Kristian; Siskakis, Aristomenis; Vukotic, Dragan. (2016) The multiplicative Hilbert matrix. Advances in Mathematics
    Academic article

2015

  • Aistleitner, Christoph; Berkes, Istvan; Seip, Kristian; Weber, Michel. (2015) Convergence of series of dilated functions and spectral norms of GCD matrices. Acta Arithmetica
    Academic article
  • Queffelec, Herve; Seip, Kristian. (2015) Approximation numbers of composition operators on the H^2 space of Dirichlet series. Journal of Functional Analysis
    Academic article
  • Aistleitner, Christoph; Berkes, Istvan; Seip, Kristian. (2015) GCD sums from Poisson integrals and systems of dilated functions. Journal of the European Mathematical Society (Print)
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2015) GCD sums and complete sets of square-free numbers. Bulletin of the London Mathematical Society
    Academic article
  • Bondarenko, Andrii; Heap, Winston Paul; Seip, Kristian. (2015) An inequality of Hardy-Littlewood type for Dirichlet polynomials. Journal of Number Theory
    Academic article
  • Queffelec, Herve; Seip, Kristian. (2015) Decay rates for approximation numbers of composition operators. Journal d'Analyse Mathematique
    Academic article

2014

  • Bondarenko, Andrii; Seip, Kristian. (2014) GCD sums and complete sets of square-free numbers. Bulletin of the London Mathematical Society
    Academic article

2013

  • Seip, Kristian; Youssfi, El Hassan. (2013) Hankel Operators on Fock Spaces and Related Bergman Kernel Estimates. Journal of Geometric Analysis
    Academic article
  • Seip, Kristian. (2013) Interpolation and sampling in small Bergman spaces. Collectanea Mathematica
    Academic article
  • Seip, Kristian. (2013) Zeros of functions in Hilbert spaces of Dirichlet series. Mathematische Zeitschrift
    Academic article

2012

  • Ortega-Cerdà, Joaquim; Seip, Kristian. (2012) A lower bound in Nehari's theorem on the polydisc. Journal d'Analyse Mathematique
    Academic article
  • El-Fallah, Omar; Kellay, Karim; Seip, Kristian. (2012) Cyclicity of singular inner functions from the corona theorem. Journal of the Institute of Mathematics of Jussieu
    Academic article

2011

  • Marzo, Sanchez Jorge; Seip, Kristian. (2011) L-infinity to L-p constants for Riesz projections. Bulletin des Sciences Mathématiques
    Academic article
  • Defant, Andreas; Frerick, Leonhard; Ortega-Cerdà, Joaquim; Ounaies, Myriam; Seip, Kristian. (2011) The Bohnenblust-Hille inequality for homogeneous polynomials is hypercontractive. Annals of Mathematics
    Academic article
  • Seip, Kristian; Belov, Yurii; Mengestie, Tesfa Yigrem. (2011) Discrete Hilbert transforms on sparse sequences. Proceedings of the London Mathematical Society
    Academic article
  • Seip, Kristian; Marzo, Sanchez Jorge. (2011) L^\infty to L^p constants for Riesz projections. Bulletin des Sciences Mathématiques
    Academic article

2010

  • Seip, Kristian; Mashreghi, Javad; Ransford, Thomas. (2010) Hilbert spaces of analytic functions. American Mathematical Society (AMS)
    Anthology
  • Belov, Yury; Mengestie, Tesfa Yigrem; Seip, Kristian. (2010) Unitary discrete Hilbert transforms. Journal d'Analyse Mathematique
    Academic article

2009

  • Seip, Kristian. (2009) Interpolation by Dirichlet Series in H^infty.
    Academic chapter
  • Lind-Johansen, Øyvind; Seip, Kristian; Skaar, Johannes. (2009) The perfect lens on a finite bandwidth. Journal of Mathematical Physics
    Academic article
  • Marzo, Jordi; Seip, Kristian. (2009) THE KADETS 1/4 THEOREM FOR POLYNOMIALS. Mathematica Scandinavica
    Academic article
  • Ascensi, Gerard; Lyubarskii, Yurii; Seip, Kristian. (2009) Phase space distribution of Gabor expansions. Applied and Computational Harmonic Analysis
    Academic article
  • Saksman, Eero; Seip, Kristian. (2009) Integral means and boundary limits of Dirichlet series. Bulletin of the London Mathematical Society
    Academic article

2008

  • Olsen, Jan-Fredrik; Seip, Kristian. (2008) Local interpolation in Hilbert spaces of Dirichlet series. Proceedings of the American Mathematical Society
    Academic article
  • Seip, Kristian; Groechenig, Karlheinz; Kutyniok, Gitta. (2008) Landau's necessary density conditions for LCA groups. Journal of Functional Analysis
    Academic article

2006

  • Hjelle, Geir Arne; Seip, Kristian. (2006) Approximations by interpolating Blaschke products. NTNU, Tapir Uttrykk
    Doctoral thesis
  • Skaar, Johannes; Seip, Kristian. (2006) Bounds for the refractive indices of metamaterials. Journal of Physics D: Applied Physics
    Academic article

2005

  • Seip, Kristian; Skaar, Johannes. (2005) An extremal problem related to negative refraction. Skrifter
    Academic article

2004

  • Nicolau, A; Ortega-Cerda, J; Seip, Kristian. (2004) The constant of interpolation. Pacific Journal of Mathematics
    Academic article
  • Ortega-Cerda, J; Seip, Kristian. (2004) Harmonic measure and uniform densities. Indiana University Mathematics Journal
    Academic article
  • Seip, Kristian. (2004) Interpolation and sampling in spaces of analytic functions. American Mathematical Society (AMS)
    Academic monograph
  • Seip, Kristian. (2004) Surjective Toeplitz operators. Acta Scientarum Mathematicarum
    Academic article

2003

  • Seip, Kristian; Chicon, Kinga. (2003) Weighted holomorphic spaces with trivial closed range multiplication operators. Proceedings of the American Mathematical Society
    Academic article
  • Seip, Kristian. (2003) Extremal functions as divisors for kernels of Toeplitz operators. Journal of Functional Analysis
    Academic article

2002

  • Seip, Kristian; Lyubarskii, Yurii. (2002) Weighted Paley-Wiener spaces. Journal of The American Mathematical Society
    Academic article
  • Seip, Kristian; Ortega-Cerda, Joaquim. (2002) Fourier frames. Annals of Mathematics
    Academic article

2001

  • Lyubarskii, Yurii; Seip, Kristian. (2001) A splitting problem for unconditional bases of complex exponentials. [Mangler utgivernavn]
    Research report

2000

  • Duren, Peter L.; Schuster, Alexander P.; Seip, Kristian. (2000) Uniform densities of regular sequences in the unit disk. Transactions of the American Mathematical Society
    Academic article
  • Schuster, Alexander P.; Seip, Kristian. (2000) Weak conditions for interpolation in holomorphic spaces. Publicacions matemàtiques
    Academic article
  • Seip, Kristian. (2000) On Gröchenig, Heil, and Walnut's proof of the local three squares theorem. Arkiv för matematik
    Academic article

1999

  • Ortega-Cerda, Joaquim; Seip, Kristian. (1999) Multipliers for entire functions and an interpolation problem of Beurling. Journal of Functional Analysis
    Academic article
  • Flornes, Kristin; Lyubarskii, Yurii; Seip, Kristian. (1999) A direct interpolation method for irregular sampling. Applied and Computational Harmonic Analysis
    Academic article
  • Lyubarskii, Yurii; Seip, Kristian. (1999) Convergence and summability of Gabor expansions at the Nyquist density. Journal of Fourier Analysis and Applications
    Academic article
  • Hedenmalm, Håkan; Lindquist, Peter; Seip, Kristian. (1999) Addendum to "a Hilbert space of dirichlet series and systems of dilated functions in L%2(0,1)".
    Academic chapter

1998

  • Lindqvist, Peter; Seip, Kristian. (1998) Note on some greatest common divisor matrices. Acta Arithmetica
    Academic article
  • Ortega-Cerdà, Joaquim; Seip, Kristian. (1998) Beurling-type density theorems for weighted LP spaces of entire functions. Journal d'Analyse Mathematique
    Academic article
  • Seip, Kristian; Ortega-Cerdà, Joaquim. (1998) Beurling-type density theorems for weighted L^P spaces of entire function. Journal d'Analyse Mathematique
    Academic article

1997

  • Hedenmalm, Håkan; Lindqvist, Peter; Seip, Kristian. (1997) A Hilbert space of Dirichlet series and systems of dilated functions in L%2(0,1). Duke mathematical journal
    Academic article
  • Lyubarskii, Yurii; Seip, Kristian. (1997) Sampling and interpolating sequences for multiband-limited functions and exponential bases on disconnected sets. Journal of Fourier Analysis and Applications
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1997) Beurling-Malliavin density of random sequences. Proceedings of the American Mathematical Society
    Academic article
  • Lyubarskii, Yurii; Seip, Kristian. (1997) Complete interpolating sequences for Paley-Wiener spaces and Muckenhoupt's (Ap) condition. Revista matemática iberoamericana
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1997) Beurling-Malliavin density of random sequences. Proceedings of the American Mathematical Society
    Academic article

1996

  • Seip, Kristian; Ulanovskii, Aleksander. (1996) Random exponential frames. Journal of the London Mathematical Society
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1996) Random exponential frames. Journal of the London Mathematical Society
    Academic article

1995

  • Seip, Kristian. (1995) An extension of the Blaschke condition. Journal of the London Mathematical Society
    Academic article
  • Seip, Kristian. (1995) A simple construction of exponential bases in L2 of the union of several intervals. Proceedings of the Edinburgh Mathematical Society
    Academic article
  • Seip, Kristian. (1995) On the connection between exponential bases and certain related sequences in L2(-_p,_p). Journal of Functional Analysis
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander; ukjent-for-m018958, ukjent-for-m018958. (1995) A best covering problem. ?
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1995) A best covering problem. Mathematica Scandinavica
    Academic article

1994

  • Seip, Kristian. (1994) On a theorem of Korenblum. Arkiv för matematik
    Academic article

1992

  • Seip, Kristian. (1992) Density theorems for sampling and interpolation in the Bargmann-Fock space I. Journal für die Reine und Angewandte Mathematik
    Academic article
  • Seip, Kristian. (1992) Density theorems for sampling and interpolation in the Bargmann-Fock space II. Journal für die Reine und Angewandte Mathematik
    Academic article
  • Seip, Kristian. (1992) Density theorems for sampling and interpolation in the Bargmann-Fock space. Bulletin of the American Mathematical Society
    Academic article
  • Seip, Kristian. (1992) Addendum to "Curves of maximum modulus in coherent state representations". Annales Henri Poincaré - A Journal of Theoretical and Mathematical Physics
    Academic article

1991

  • Owren, Brynjulf; Seip, Kristian. (1991) A uniqueness result related to the stability of explicit Runge-Kutta methods. BIT Numerical Mathematics
    Academic article

1990

  • Owren, Brynjulf; Seip, Kristian. (1990) Some stability results for explicit Runge-Kutta methods. BIT Numerical Mathematics
    Academic article

Journal publications

  • Seip, Kristian; Lyubarskii, Yurii. (2002) Weighted Paley-Wiener spaces. Journal of The American Mathematical Society
    Academic article
  • Seip, Kristian; Chicon, Kinga. (2003) Weighted holomorphic spaces with trivial closed range multiplication operators. Proceedings of the American Mathematical Society
    Academic article
  • Seip, Kristian; Ortega-Cerda, Joaquim. (2002) Fourier frames. Annals of Mathematics
    Academic article
  • Aistleitner, Christoph; Berkes, Istvan; Seip, Kristian; Weber, Michel. (2015) Convergence of series of dilated functions and spectral norms of GCD matrices. Acta Arithmetica
    Academic article
  • Brevig, Ole Fredrik; Perfekt, Karl-Mikael; Seip, Kristian. (2019) Volterra operators on Hardy spaces of Dirichlet series. Journal für die Reine und Angewandte Mathematik
    Academic article
  • Seip, Kristian. (1992) Density theorems for sampling and interpolation in the Bargmann-Fock space I. Journal für die Reine und Angewandte Mathematik
    Academic article
  • Seip, Kristian. (1992) Density theorems for sampling and interpolation in the Bargmann-Fock space II. Journal für die Reine und Angewandte Mathematik
    Academic article
  • Seip, Kristian. (1992) Density theorems for sampling and interpolation in the Bargmann-Fock space. Bulletin of the American Mathematical Society
    Academic article
  • Bondarenko, Andrii; Hilberdink, Titus; Seip, Kristian. (2016) Gal-type GCD sums beyond the critical line. Journal of Number Theory
    Academic article
  • Nicolau, A; Ortega-Cerda, J; Seip, Kristian. (2004) The constant of interpolation. Pacific Journal of Mathematics
    Academic article
  • Hedenmalm, Håkan; Lindqvist, Peter; Seip, Kristian. (1997) A Hilbert space of Dirichlet series and systems of dilated functions in L%2(0,1). Duke mathematical journal
    Academic article
  • Lyubarskii, Yurii; Seip, Kristian. (1997) Sampling and interpolating sequences for multiband-limited functions and exponential bases on disconnected sets. Journal of Fourier Analysis and Applications
    Academic article
  • Seip, Kristian; Youssfi, El Hassan. (2013) Hankel Operators on Fock Spaces and Related Bergman Kernel Estimates. Journal of Geometric Analysis
    Academic article
  • Seip, Kristian. (2013) Interpolation and sampling in small Bergman spaces. Collectanea Mathematica
    Academic article
  • Ortega-Cerda, J; Seip, Kristian. (2004) Harmonic measure and uniform densities. Indiana University Mathematics Journal
    Academic article
  • Seip, Kristian. (1995) An extension of the Blaschke condition. Journal of the London Mathematical Society
    Academic article
  • Brevig, Ole Fredrik; Ortega-Cerdà, Joaquim; Seip, Kristian. (2023) Hilbert points in Hardy spaces. St. Petersburg Mathematical Journal
    Academic article
  • Seip, Kristian. (1995) A simple construction of exponential bases in L2 of the union of several intervals. Proceedings of the Edinburgh Mathematical Society
    Academic article
  • Seip, Kristian. (1995) On the connection between exponential bases and certain related sequences in L2(-_p,_p). Journal of Functional Analysis
    Academic article
  • Brevig, Ole Fredrik; Chirre, Andrés; Ortega-Cerdà, Joaquim; Seip, Kristian. (2024) Point evaluation in Paley–Wiener spaces. Journal d'Analyse Mathematique
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1997) Beurling-Malliavin density of random sequences. Proceedings of the American Mathematical Society
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander; ukjent-for-m018958, ukjent-for-m018958. (1995) A best covering problem. ?
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1996) Random exponential frames. Journal of the London Mathematical Society
    Academic article
  • Queffelec, Herve; Seip, Kristian. (2015) Approximation numbers of composition operators on the H^2 space of Dirichlet series. Journal of Functional Analysis
    Academic article
  • Bondarenko, Andrii; Brevig, Ole Fredrik; Saksman, Eero; Seip, Kristian; Zhao, Jing. (2018) Pseudomoments of the Riemann zeta function. Bulletin of the London Mathematical Society
    Academic article
  • Lind-Johansen, Øyvind; Seip, Kristian; Skaar, Johannes. (2009) The perfect lens on a finite bandwidth. Journal of Mathematical Physics
    Academic article
  • Bondarenko, Andrii; Radchenko, Danylo; Seip, Kristian. (2022) Fourier Interpolation with Zeros of Zeta and L-Functions. Constructive approximation
    Academic article
  • Seip, Kristian. (2003) Extremal functions as divisors for kernels of Toeplitz operators. Journal of Functional Analysis
    Academic article
  • Olsen, Jan-Fredrik; Seip, Kristian. (2008) Local interpolation in Hilbert spaces of Dirichlet series. Proceedings of the American Mathematical Society
    Academic article
  • Seip, Kristian; Groechenig, Karlheinz; Kutyniok, Gitta. (2008) Landau's necessary density conditions for LCA groups. Journal of Functional Analysis
    Academic article
  • Lyubarskii, Yurii; Seip, Kristian. (1997) Complete interpolating sequences for Paley-Wiener spaces and Muckenhoupt's (Ap) condition. Revista matemática iberoamericana
    Academic article
  • Lindqvist, Peter; Seip, Kristian. (1998) Note on some greatest common divisor matrices. Acta Arithmetica
    Academic article
  • Ortega-Cerdà, Joaquim; Seip, Kristian. (2012) A lower bound in Nehari's theorem on the polydisc. Journal d'Analyse Mathematique
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2016) Helson's problem for sums of a random multiplicative function. Mathematika
    Academic article
  • Bondarenko, Andrii; Brevig, Ole Fredrik; Saksman, Eero; Seip, Kristian. (2019) Linear space properties of H^p spaces of Dirichlet series. Transactions of the American Mathematical Society
    Academic article
  • Seip, Kristian. (1992) Addendum to "Curves of maximum modulus in coherent state representations". Annales Henri Poincaré - A Journal of Theoretical and Mathematical Physics
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2017) Large greatest common divisor sums and extreme values of the Riemann zeta function. Duke mathematical journal
    Academic article
  • Aistleitner, Christoph; Berkes, Istvan; Seip, Kristian. (2015) GCD sums from Poisson integrals and systems of dilated functions. Journal of the European Mathematical Society (Print)
    Academic article
  • Seip, Kristian. (1994) On a theorem of Korenblum. Arkiv för matematik
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2015) GCD sums and complete sets of square-free numbers. Bulletin of the London Mathematical Society
    Academic article
  • El-Fallah, Omar; Kellay, Karim; Seip, Kristian. (2012) Cyclicity of singular inner functions from the corona theorem. Journal of the Institute of Mathematics of Jussieu
    Academic article
  • Belov, Yury; Mengestie, Tesfa Yigrem; Seip, Kristian. (2010) Unitary discrete Hilbert transforms. Journal d'Analyse Mathematique
    Academic article
  • Duren, Peter L.; Schuster, Alexander P.; Seip, Kristian. (2000) Uniform densities of regular sequences in the unit disk. Transactions of the American Mathematical Society
    Academic article
  • Marzo, Jordi; Seip, Kristian. (2009) THE KADETS 1/4 THEOREM FOR POLYNOMIALS. Mathematica Scandinavica
    Academic article
  • Brevig, Ole Fredrik; Seip, Kristian. (2024) The norm of the backward shift on H1 is 2/sqrt(3). Pure and Applied Functional Analysis
    Academic article
  • Brevig, Ole Fredrik; Ortega-Cerdà, Joaquim; Seip, Kristian; Zhao, Jing. (2018) Contractive inequalities for Hardy spaces. Functiones et Approximatio Commentarii Mathematici
    Academic article
  • Marzo, Sanchez Jorge; Seip, Kristian. (2011) L-infinity to L-p constants for Riesz projections. Bulletin des Sciences Mathématiques
    Academic article
  • Skaar, Johannes; Seip, Kristian. (2006) Bounds for the refractive indices of metamaterials. Journal of Physics D: Applied Physics
    Academic article
  • Ascensi, Gerard; Lyubarskii, Yurii; Seip, Kristian. (2009) Phase space distribution of Gabor expansions. Applied and Computational Harmonic Analysis
    Academic article
  • Schuster, Alexander P.; Seip, Kristian. (2000) Weak conditions for interpolation in holomorphic spaces. Publicacions matemàtiques
    Academic article
  • Defant, Andreas; Frerick, Leonhard; Ortega-Cerdà, Joaquim; Ounaies, Myriam; Seip, Kristian. (2011) The Bohnenblust-Hille inequality for homogeneous polynomials is hypercontractive. Annals of Mathematics
    Academic article
  • Brevig, Ole Fredrik; Ortega-Cerdà, Joaquim; Seip, Kristian. (2021) Idempotent Fourier multipliers acting contractively on H^p spaces. Geometric and Functional Analysis
    Academic article
  • Owren, Brynjulf; Seip, Kristian. (1991) A uniqueness result related to the stability of explicit Runge-Kutta methods. BIT Numerical Mathematics
    Academic article
  • Owren, Brynjulf; Seip, Kristian. (1990) Some stability results for explicit Runge-Kutta methods. BIT Numerical Mathematics
    Academic article
  • Ortega-Cerdà, Joaquim; Seip, Kristian. (1998) Beurling-type density theorems for weighted LP spaces of entire functions. Journal d'Analyse Mathematique
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2014) GCD sums and complete sets of square-free numbers. Bulletin of the London Mathematical Society
    Academic article
  • Saksman, Eero; Seip, Kristian. (2009) Integral means and boundary limits of Dirichlet series. Bulletin of the London Mathematical Society
    Academic article
  • Brevig, Ole Fredrik; Seip, Kristian. (2024) Maximal norm Hankel operators. Journal of Mathematical Analysis and Applications
    Academic article
  • Seip, Kristian. (2013) Zeros of functions in Hilbert spaces of Dirichlet series. Mathematische Zeitschrift
    Academic article
  • Brevig, Ole Fredrik; Llinares, Adrián; Seip, Kristian. (2026) Critical Exponents of the Riesz Projection. Computational methods in Function Theory
    Academic article
  • Bayart, Frederic; Queffelec, Herve; Seip, Kristian. (2016) Approximation numbers of composition operators on H^p spaces of Dirichlet series. Annales de l'Institut Fourier
    Academic article
  • Seip, Kristian; Ortega-Cerdà, Joaquim. (1998) Beurling-type density theorems for weighted L^P spaces of entire function. Journal d'Analyse Mathematique
    Academic article
  • Seip, Kristian. (2004) Surjective Toeplitz operators. Acta Scientarum Mathematicarum
    Academic article
  • Saias, Eric; Seip, Kristian. (2020) A footnote to a theorem Halász. Functiones et Approximatio Commentarii Mathematici
    Academic article
  • Brevig, Ole Fredrik; Ortega-Cerdà, Joaquim; Seip, Kristian. (2021) A converse to the Schwarz lemma for planar harmonic maps. Journal of Mathematical Analysis and Applications
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2018) Note on the resonance method for the Riemann zeta function. Operator Theory: Advances and Applications
    Academic article
  • Ortega-Cerda, Joaquim; Seip, Kristian. (1999) Multipliers for entire functions and an interpolation problem of Beurling. Journal of Functional Analysis
    Academic article
  • Seip, Kristian; Skaar, Johannes. (2005) An extremal problem related to negative refraction. Skrifter
    Academic article
  • Bondarenko, Andrii; Heap, Winston Paul; Seip, Kristian. (2015) An inequality of Hardy-Littlewood type for Dirichlet polynomials. Journal of Number Theory
    Academic article
  • Flornes, Kristin; Lyubarskii, Yurii; Seip, Kristian. (1999) A direct interpolation method for irregular sampling. Applied and Computational Harmonic Analysis
    Academic article
  • Seip, Kristian. (2000) On Gröchenig, Heil, and Walnut's proof of the local three squares theorem. Arkiv för matematik
    Academic article
  • Seip, Kristian; Belov, Yurii; Mengestie, Tesfa Yigrem. (2011) Discrete Hilbert transforms on sparse sequences. Proceedings of the London Mathematical Society
    Academic article
  • Lyubarskii, Yurii; Seip, Kristian. (1999) Convergence and summability of Gabor expansions at the Nyquist density. Journal of Fourier Analysis and Applications
    Academic article
  • Seip, Kristian. (2020) Universality and distribution of zeros and poles of some zeta functions. Journal d'Analyse Mathematique
    Academic article
  • Bondarenko, Andrii; Seip, Kristian. (2018) Extreme values of the Riemann zeta function and its argument. Mathematische Annalen
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1997) Beurling-Malliavin density of random sequences. Proceedings of the American Mathematical Society
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1996) Random exponential frames. Journal of the London Mathematical Society
    Academic article
  • Brevig, Ole Fredrik; Perfekt, Karl-Mikael; Seip, Kristian; Siskakis, Aristomenis; Vukotic, Dragan. (2016) The multiplicative Hilbert matrix. Advances in Mathematics
    Academic article
  • Seip, Kristian; Ulanovskii, Aleksander. (1995) A best covering problem. Mathematica Scandinavica
    Academic article
  • Seip, Kristian; Marzo, Sanchez Jorge. (2011) L^\infty to L^p constants for Riesz projections. Bulletin des Sciences Mathématiques
    Academic article
  • Bondarenko, Andrii; Darbar, Pranendu; Hagen, Markus Valås; Heap, Paul Winston; Seip, Kristian. (2023) A dichotomy for extreme values of zeta and Dirichlet L-functions. Bulletin of the London Mathematical Society
    Academic article
  • Konyagin, Sergei; Queffelec, Herve; Saksman, Eero; Seip, Kristian. (2022) Riesz projection and bounded mean oscillation for Dirichlet series. Studia Mathematica
    Academic article
  • Queffelec, Herve; Seip, Kristian. (2015) Decay rates for approximation numbers of composition operators. Journal d'Analyse Mathematique
    Academic article

Books

  • Gesztesy, Fritz; Hanche-Olsen, Harald; Jakobsen, Espen Robstad; Lyubarskii, Yurii; Risebro, Nils Henrik; Seip, Kristian. (2018) Non-linear Partial Differential Equations, Mathematical Physics, and Stochastic Analysis: The Helge Holden Anniversary Volume. European Mathematical Society (EMS) Press
    Anthology
  • Seip, Kristian; Mashreghi, Javad; Ransford, Thomas. (2010) Hilbert spaces of analytic functions. American Mathematical Society (AMS)
    Anthology
  • Seip, Kristian. (2004) Interpolation and sampling in spaces of analytic functions. American Mathematical Society (AMS)
    Academic monograph

Part of book/report

  • Bondarenko, Andrii; Ortega-Cerdà, Joaquim; Radchenko, Danylo; Seip, Kristian. (2026) The Hörmander--Bernhardsson Extremal Function: A Preliminary Study.
    Academic chapter
  • Seip, Kristian. (2009) Interpolation by Dirichlet Series in H^infty.
    Academic chapter
  • Saksman, Eero; Seip, Kristian. (2016) Some open questions in analysis for Dirichlet series.
    Academic chapter
  • Hedenmalm, Håkan; Lindquist, Peter; Seip, Kristian. (1999) Addendum to "a Hilbert space of dirichlet series and systems of dilated functions in L%2(0,1)".
    Academic chapter

Report

  • Lyubarskii, Yurii; Seip, Kristian. (2001) A splitting problem for unconditional bases of complex exponentials. [Mangler utgivernavn]
    Research report

Student thesis or dissertation

  • Bampouras, Konstantinos; Perfekt, Karl-Mikael; Seip, Kristian. (2026) Hankel Operators on Hardy and Paley-Wiener spaces and the accumulated Möbius distortion. Norges teknisk-naturvitenskapelige universitet
    Doctoral thesis
  • Hjelle, Geir Arne; Seip, Kristian. (2006) Approximations by interpolating Blaschke products. NTNU, Tapir Uttrykk
    Doctoral thesis

Teaching

Courses

  • MA1101 - Foundational Calculus 1
  • MA1103 - Multivariate analysis and vector calculus
  • MA3150 - Analytic Number Theory

Outreach

2025

  • Lecture
    Seip, Kristian. (2025) The Hörmander--Bernhardsson extremal function. Analysis Seminar
  • Lecture
    Seip, Kristian. (2025) The uncertainty principle revisited: Fourier uniqueness pairs and Fourier interpolation. Colloquium
  • Conference lecture
    Seip, Kristian. (2025) The Hörmander--Bernhardsson extremal function. Progress and Emergent Theories in Zeta and L-Functions
  • Conference lecture
    Seip, Kristian. (2025) The Hörmander--Bernhardsson extremal function. Modern Trends in Fourier Analysis
  • Conference lecture
    Seip, Kristian. (2025) The Hörmander--Bernhardsson extremal function. Conference on Operator Theory and Complex Analysis

2024

  • Conference lecture
    Seip, Kristian. (2024) Point evaluation in Paley--Wiener spaces. Analytic Function Spaces, Their Operators and Applications, celebrating the 60th birthday of Bill Ross
  • Conference lecture
    Seip, Kristian. (2024) Critical exponents for the Riesz projection. Function Spaces 24
  • Lecture
    Seip, Kristian. (2024) Fourier interpolation and the uncertainty principle. Colloquium
  • Conference lecture
    Seip, Kristian. (2024) The norm of the backward shift on H^1 is 2 over the squareroot of 3. Shapes and shades of analysis
  • Conference lecture
    Seip, Kristian. (2024) Critical exponents for the Riesz projection. Analysis Seminar
  • Conference lecture
    Seip, Kristian. (2024) Fourier interpolation and the uncertainty principle. Mittag-Leffler Colloquium
  • Conference lecture
    Seip, Kristian. (2024) Fourier interpolation and the uncertainty principle. Nasjonal matematikermøte

2023

  • Conference lecture
    Seip, Kristian. (2023) Point evaluation in Paley--Wiener spaces. Analysis and Number Theory Seminar

2022

  • Conference lecture
    Seip, Kristian. (2022) Idempotent Fourier multipliers acting contractively on H^p spaces. Operators, Functions, Systems: Classical and Modern
  • Conference lecture
    Seip, Kristian. (2022) Point evaluation in Paley--Wiener spaces. Bordeaux Analysis Seminar
  • Conference lecture
    Seip, Kristian. (2022) Inequalities via Numerics. Theoretical and Computational Aspects of Dynamical Systems
  • Lecture
    Seip, Kristian. (2022) Riemann-hypotesen. Onsdagsforelesning
  • Conference lecture
    Seip, Kristian. (2022) Contractive norm inequalities. 73rd British Mathematical Colloquium, Morning Lecture

2021

  • Lecture
    Seip, Kristian. (2021) Riemann-hypotesen. Realfagsdagene 2021
  • Conference lecture
    Seip, Kristian. (2021) Contractive inequalities for Hardy spaces. 13th ISAAC Congress (online conference)
  • Conference lecture
    Seip, Kristian. (2021) Idempotent Fourier multipliers acting contractively on H^p spaces. Analysis Seminar, Beograd
  • Conference lecture
    Seip, Kristian. (2021) Idempotent Fourier multipliers acting contractively on H^p spaces. Frontiers of Operator Theory
  • Conference lecture
    Seip, Kristian. (2021) Idempotent Fourier multipliers acting contractively on H^p spaces. Geometric and Functional Analysis Seminer
  • Conference lecture
    Seip, Kristian. (2021) Contractive inequalities for Hardy spaces. Colloquium on Analytic Function Spaces and their Applications
  • Conference lecture
    Seip, Kristian. (2021) Contractive inequalities for Hardy spaces. ”Analysis Day” on the occasion of 80-th anniversary of Nikolai Nikolski

2020

  • Conference lecture
    Seip, Kristian. (2020) Fourier interpolation with the zeros of the Riemann zeta function. Inaugural Lecture Tblisi Analysis & PDE Seminar
  • Conference lecture
    Seip, Kristian. (2020) Fourier interpolation with the zeros of the Riemann zeta function. Online Seminar on Complex Analysis and Allied Topics, Roma, Milano, Bologna
  • Conference lecture
    Seip, Kristian. (2020) Fourier interpolation with zeros of zeta and L-functions. Analysis and PDE Webinar (IMPA)
  • Conference lecture
    Seip, Kristian. (2020) Fourier interpolation with zeros of zeta and L-functions. Tel Aviv University Analysis Seminar

2019

  • Conference lecture
    Seip, Kristian. (2019) Some glimpses of the Riemann zeta function. Challenges and New Perspectives in Mathematics
  • Conference lecture
    Seip, Kristian. (2019) Value distribution of some zeta functions. Explorations in Harmonic Analysis and Other realms, A conference honoring Alexander Olevskii's 80th birthday
  • Conference lecture
    Seip, Kristian. (2019) Encounters with the Riemann Zeta Function. Barcelona Analysis Conference 2019
  • Conference lecture
    Seip, Kristian. (2019) Value Distribution of Some Zeta Functions. Holomorphic Days
  • Conference lecture
    Seip, Kristian. (2019) Value distribution of some zeta functions. New Trends in Complex and Fourier Analysis, and Operator Theory
  • Conference lecture
    Seip, Kristian. (2019) Volterra operators on Hardy spaces of Dirichlet series. Spaces of Analytic Functions: Approximation, Interpolation, Sampling
  • Conference lecture
    Seip, Kristian. (2019) The H^1 inequalities of Carleman and Hardy from a multiplicative point of view. Analysis, Probability, Number Theory and Their Interaction
  • Conference lecture
    Seip, Kristian. (2019) On and around the Riemann zeta function. Colloquium
  • Conference lecture
    Seip, Kristian. (2019) Value distribution of some zeta functions. Interpolation in Spaces of Analytic Functions
  • Conference lecture
    Seip, Kristian. (2019) Value distribution of Dirichlet series. Advanced Course, Intensive Research Programme, "Spaces of Analytic Functions: Approximation, Interpolation, Sampling"I

2018

  • Conference lecture
    Seip, Kristian. (2018) Extreme values of the Riemann zeta function and its argument. N-Cube Days
  • Conference lecture
    Seip, Kristian. (2018) Hardy and BMO spaces of Dirichlet series. International Conference on Complex Analysis, Potential Theory and Applications, in honour of Professor Stephen J Gardiner on the occassion of his 60th Birthday
  • Conference lecture
    Seip, Kristian. (2018) Extreme values of the Riemann zeta function and its argument. Analysis of operators on function spaces: A conference dedicated to the mathematics of Serguei Shimorin
  • Conference lecture
    Seip, Kristian. (2018) Hardy spaces of Dirichlet series and the Riemann zeta function. 6th Spring School of Analysis in Memory of Aleksander Pelczynski
  • Lecture
    Seip, Kristian. (2018) Yves Meyer -- the 2017 Abel Laureate. Forum for matematiske perler
  • Lecture
    Seip, Kristian. (2018) Some milestones in the search for patterns in the primes. Matematikkdøgnet
  • Conference lecture
    Seip, Kristian. (2018) Extreme values of the Riemann zeta function and its argument. International Conference on Complex Analysis Dedicated to the memory of Andrei Gonchar and Anatoliy Vitushkin

2017

  • Conference lecture
    Seip, Kristian. (2017) Analysis for Dirichlet Series and the Riemann Zeta Function. Computational Methods and Function Theory
  • Conference lecture
    Seip, Kristian. (2017) A Survey on Analysis for Dirichlet Series. Control of Distributed Parameter Systems
  • Conference lecture
    Seip, Kristian. (2017) On the growth of the Riemann zeta function and its argument. Distinguished Colloquium
  • Conference lecture
    Seip, Kristian. (2017) Interaction between number theory and analysis for Dirichlet series. Lecture Course, Simons Semester "Emergent trends in complex analysis and functional analysis"
  • Lecture
    Seip, Kristian. (2017) Some milestones in research on the distribution of the primes. Finale i Abelkonkurransen
  • Conference lecture
    Seip, Kristian. (2017) Hardy spaces of Dirichlet series and the Riemann zeta function. Conference on Nonlinear Functional Analysis
  • Lecture
    Seip, Kristian. (2017) Yves Meyer - vinner av Abelprisen 2017. Norsk matematikkråd, årsmøte
  • Lecture
    Seip, Kristian. (2017) Om primtall, primtallstvillinger og primtallsgap. Onsdagsseminar for realfagsstudenter

2016

  • Conference lecture
    Seip, Kristian. (2016) Large GCD sums and extreme values of the Riemann zeta function. 27th Nordic Congress of Mathematicians
  • Conference lecture
    Seip, Kristian. (2016) Analysis for Dirichlet Series and Analytic Number Theory. Minikurs
  • Conference lecture
    Seip, Kristian. (2016) Gál type GCD sums and extreme values of the Riemann zeta function. Number Theory Seminar
  • Conference lecture
    Seip, Kristian. (2016) Lower bounds for extreme values of the Riemann zeta function. 7th European Congress of Mathematics
  • Conference lecture
    Seip, Kristian. (2016) Gál type GCD sums and extreme values of the Riemann zeta function. Analysis and Probability, Conference in Honour of Jean-Pierre Kahane
  • Conference lecture
    Seip, Kristian. (2016) From Gál's theorem to extreme values of the Riemann zeta function. Harmonic Analysis, Complex Analysis, Spectral Theory and All That, Conference in Honour of Sasha Volberg
  • Conference lecture
    Seip, Kristian. (2016) Hardy spaces of Dirichlet series and pseudomoments of the Riemann zeta function. Gjesteforelesning Universite Paris-Est Marne-la-Vallee
  • Lecture
    Seip, Kristian. (2016) Riemanns zeta-funksjon og Riemann-hypotesen. Foredrag i regi av linjeforeningen Nabla
  • Conference lecture
    Seip, Kristian. (2016) Operator theory for Dirichlet series. Analysis seminar
  • Conference lecture
    Seip, Kristian. (2016) On the growth of the Riemann zeta function. Colloquium King's College London
  • Conference lecture
    Seip, Kristian. (2016) On the growth of the Riemann zeta function. Colloquium University of Helsinki
  • Conference lecture
    Seip, Kristian. (2016) Gal type GCD sums and extreme values of the Riemann zeta function. Number Theory Seminar
  • Conference lecture
    Seip, Kristian; Bondarenko, Andrii. (2016) Extreme values of the Riemann zeta function. Analytic Number Theory

2015

  • Conference lecture
    Seip, Kristian. (2015) Operators on Hardy spaces of Dirichlet series. Frontiers of Singular Integrals
  • Conference lecture
    Seip, Kristian. (2015) Multiplicative Hankel matrices. Completeness Problems, Carleson Measures and Spaces of Analytic Functions
  • Conference lecture
    Seip, Kristian. (2015) Hardy spaces of Dirichlet series and number theory. Recent Trends in Operator Theory and Functional Analysis
  • Conference lecture
    Seip, Kristian. (2015) Multiplicative Hankel matrices. Colloquium Talk
  • Conference lecture
    Seip, Kristian. (2015) Large GCD sums and extreme values of the Riemann zeta function. A Conference in Number Theory Celebrating the 65th Birthday of R. Balasubramanian

2014

  • Conference lecture
    Seip, Kristian. (2014) Additive og multiplikative Hankel-former. Ski og matematikk 2014
  • Conference lecture
    Seip, Kristian. (2014) Dirichlet Series and Analysis on Polydiscs. Minicourse Postgraduate Excellence Program
  • Conference lecture
    Seip, Kristian. (2014) Poisson integrals on polydiscs. Complex Analysis and Related Topics
  • Conference lecture
    Seip, Kristian. (2014) An inequality of Hardy-Littlewood type for Dirichlet polynomials. IWOTA
  • Conference lecture
    Seip, Kristian. (2014) Hankel and composition operators on spaces of Dirichlet series. Function Spaces and Harmonic Analysis

2013

  • Conference lecture
    Seip, Kristian. (2013) Analysis on Polydiscs. Stockholm Mathematics Center Colloquium
  • Conference lecture
    Seip, Kristian. (2013) Polynomials on Polydiscs. 26th Nordic and First European-Nordic Congress of Mathematics
  • Conference lecture
    Seip, Kristian. (2013) Analysis on Polydiscs. Kollokvium Universitetet i Oslo

2012

  • Conference lecture
    Seip, Kristian. (2012) Hankel forms and a conjecture of Helson. HCAA 2012
  • Conference lecture
    Seip, Kristian. (2012) Interpolation and sampling in small Bergman spaces. Analyseseminar NTNU
  • Conference lecture
    Seip, Kristian. (2012) Estimates for Dirichlet polynomials. EMS Lectures 2012
  • Conference lecture
    Seip, Kristian. (2012) Analysis on polydiscs. Colloquium University of Lund
  • Conference lecture
    Seip, Kristian. (2012) GCD sums from Poisson integrals and systems of dilated functions. Operator related function theory and time frequency analysis
  • Conference lecture
    Seip, Kristian. (2012) Boundary values and zeros of functions in Hilbert spaces of Dirichlet series; GCD sums from Poisson integrals and systems of dilated functions. EMS Lecturer 2012
  • Conference lecture
    Seip, Kristian. (2012) Function theory of Hardy spaces of Dirichlet series. International Symposium on Orthogonal Polynomials and Special Functions -- a Complex Analytic Perspective

2011

  • Conference lecture
    Seip, Kristian. (2011) Cyclicity of singular inner functions from the corona theorem. NTNU Analysis Seminar
  • Conference lecture
    Seip, Kristian. (2011) Hardy spaces of Dirichlet series and function theory on polydiscs. KAWA 2 - Winterschool in Complex Analysis and Geometry
  • Conference lecture
    Seip, Kristian. (2011) The Bohnenblust-Hille inequality for homogeneous polynomials. Holomorphic Day
  • Conference lecture
    Seip, Kristian. (2011) Hankel forms and estimates for Dirichlet polynomials. International Workshop on Operator Theory and Applications (IWOTA) 22
  • Conference lecture
    Seip, Kristian. (2011) Hankel forms and a conjecture of Helson. Analyseseminar NTNU
  • Conference lecture
    Seip, Kristian. (2011) Hankel forms and a conjecture of Helson. Recent Trends in Analysis in Honor of Nikolai Nikolski

2010

  • Conference lecture
    Seip, Kristian. (2010) Discrete Hilbert transforms and systems of reproducing kernels. Journees d'Analyse
  • Conference lecture
    Seip, Kristian. (2010) L^∞ to L^p constants for Riesz projections. Analyseseminar
  • Conference lecture
    Seip, Kristian. (2010) Bounded analytic functions on the infinite polydisc. 14th Nordan conference in Complex Analysis and Geometry
  • Conference lecture
    Seip, Kristian. (2010) Hankel operators and the Bergman metric for Fock spaces. Workshop in Operator Theory and Complex Analysis
  • Conference lecture
    Seip, Kristian. (2010) Estimates for Dirichlet polynomials. Mini course (4 lectures)
  • Conference lecture
    Seip, Kristian. (2010) Discrete Hilbert transforms and systems of reproducing kernels. Functional Analysis Valencia 2010
  • Lecture
    Seip, Kristian. (2010) The Abel Prize - A Century-Old Dream That Came True. Guest Lecture UAEU
  • Conference lecture
    Seip, Kristian. (2010) Introduction about the Abel Prize. Symposium for John Torrence Tate

2009

  • Lecture
    Seip, Kristian. (2009) The Abel Prize - a century old dream that came true. Colloquium Talk
  • Conference lecture
    Seip, Kristian. (2009) Why Bohr got interested in his radius and what it has led to. Kollokvium
  • Conference lecture
    Seip, Kristian. (2009) Unitary discrete Hilbert transforms. International Workshop on Complex Analysis dedicated to the 65th anniversary of Professor Arne Stray
  • Conference lecture
    Seip, Kristian. (2009) Unitary discrete Hilbert transforms. Analysis seminar
  • Conference lecture
    Seip, Kristian. (2009) Hardy spaces of Dirichlet series. Analysis seminar
  • Conference lecture
    Seip, Kristian. (2009) Bounded analytic functions in infinite polydiscs. Workshop on multivariable operator theory
  • Conference lecture
    Seip, Kristian. (2009) Hardy spaces of Dirichlet series and function theory in polydiscs. Norwegian Fall School on Analysis
  • Conference lecture
    Seip, Kristian. (2009) The Bohnenblust-Hille inequality for homogeneous polynomials is hypercontractive. Analysis seminar
  • Conference lecture
    Seip, Kristian. (2009) The Feichtinger conjecture in model subspaces of H^2. Strobl 09 Conference on Time-Frequency

2005

  • Conference lecture
    Seip, Kristian. (2005) Extremal Functions. Recent Advances in Operator-Related Function Theory, II

2004

  • Conference lecture
    Seip, Kristian. (2004) Surjective Toeplitz operators. IWOTA - International Workshop on Operator Theory and Applications
  • Conference lecture
    Seip, Kristian. (2004) Interpolation and Sampling. 2nd International Course of Mathematical Analysis in Andalucia

2003

  • Conference lecture
    Seip, Kristian. (2003) The constant of interpolation. Third Conference of the European Research Network "Analysis and Operators"
  • Conference lecture
    Seip, Kristian. (2003) Harmonic measure on Swiss cheeses with uniformly spaced holes. First Joint Meeting RSME-AMS, Special Session on Banach Spaces of Analytic Functions
  • Conference lecture
    Seip, Kristian. (2003) Interpolation problems in Spaces of Analytic Functions. [Mangler data]
  • Conference lecture
    Seip, Kristian. (2003) Extremal functions. Colloquium Lecture
  • Conference lecture
    Seip, Kristian. (2003) Interpolation and sampling in the unit disk. [Mangler data]
  • Conference lecture
    Seip, Kristian. (2003) Extremal functions as divisors for kernels of Toeplitz operators. Analysis Seminar

2002

  • Conference lecture
    Seip, Kristian. (2002) Sampling, interpolation, and Toeplitz operators. Congreso RSME 2002, Real Sociedad Matematica Espanola
  • Conference lecture
    Seip, Kristian. (2002) Recent encounters with Toeplitz operators and coinvariant subspaces. Abel Bicentennial Conference 2002
  • Conference lecture
    Seip, Kristian. (2002) Extremal functions as divisors for kernels of Toeplitz operators. NORDAN 2002, Nordic Complex Analysis Meeting
  • Conference lecture
    Seip, Kristian. (2002) Kernels of Toeplitz operators via extremal functions. Seminar Lecture
  • Conference lecture
    Seip, Kristian. (2002) Sampling, interpolation, and Toeplitz operators. Finnish Mathematical days.
  • Conference lecture
    Seip, Kristian. (2002) Extremal functions as contractive or expansive divisors for kernels of Toeplitz operators. Seminar Talk, University of Helsinki.

2001

  • Conference lecture
    Seip, Kristian. (2001) The Carleson condition and interpolation in Holomorphic spaces. [Mangler data]

2000

  • Conference lecture
    Seip, Kristian. (2000) Fourier frames. [Mangler data]
  • Conference lecture
    Seip, Kristian. (2000) Frames and Riesz bases of reproducing kernels in holomorphic spaces. Rajchman - Zygmund - Marcinkiewicz Symposium
  • Conference lecture
    Seip, Kristian. (2000) Frames of complex exponentials and problems of norm equivalence for Hilbert spaces of entire functions. International Workshop on Operator Theory and Its Applications
  • Conference lecture
    Seip, Kristian. (2000) Analysis at the Nyquist rate. Functional Analysis Valencia 2000

1999

  • Conference lecture
    Seip, Kristian. (1999) Multipliers for entire functions and an interpolation problem of Beurling. Gelbart memorial Lectures
  • Conference lecture
    Seip, Kristian. (1999) Nonharmonic Fourier Series and Some Harmonic Connections. Gelbart memorial Lectures
  • Conference lecture
    Seip, Kristian. (1999) Equivalent norms for the Paley-Wiener space. Functional Analysis and related topics
  • Conference lecture
    Seip, Kristian. (1999) Weighted Paley-Wiener Spaces. Analysis Seminar
  • Conference lecture
    Seip, Kristian. (1999) Sampling sequences. SampTA'99
  • Conference lecture
    Seip, Kristian. (1999) Weighted Paley-Wiener Spaces. Analysis Seminar
  • Conference lecture
    Seip, Kristian. (1999) Sampling sequences. SampTA'99

1998

  • Conference lecture
    Seip, Kristian. (1998) Developments from nonharmonic Fourier series. International Congress of Mathematicians
  • Lecture
    Seip, Kristian. (1998) The weights of weighted Paley-Wiener spaces. [Mangler data]

1997

  • Lecture
    Seip, Kristian. (1997) Beurling-type density theorems for weighted LP spaces of entire functions. Entire functions in modern analysis
  • Lecture
    Seip, Kristian. (1997) Funksjonsteori i Bergman-rom. Ski og matematikk
  • Lecture
    Seip, Kristian. (1997) Sampling and interpolation in some holomorphic spaces. [Mangler data]
  • Conference lecture
    Seip, Kristian. (1997) On some interpolation problems for entire functions and the Hunt-Muckenhoupt-Wheeden theorem. Complex Analysis and Differential Equations

1995

  • Lecture
    Seip, Kristian. (1995) A Hilbert space of Dirichlet series and systems of dilated functions in L2(0,1). Linear Problems in Analysis
  • Lecture
    Seip, Kristian. (1995) Frames and bases of complex exponentials. [Mangler data]
  • Lecture
    Seip, Kristian. (1995) Completeness and basicity of @(_f(nx)@) in L%2(0,1). [Mangler data]
  • Lecture
    Seip, Kristian. (1995) A new application of Dirichlet series. Matematisk felleskollokvium
  • Lecture
    Seip, Kristian. (1995) Sampling and interpolation in spaces of holomorphic functions. [Mangler data]
  • Lecture
    Seip, Kristian. (1995) Interpolating sequences and invariant subspaces of infinite index in Bergman spaces. [Mangler data]

1994

  • Lecture
    Seip, Kristian. (1994) Growth and zeros of functions in Bergman space. AMS Summer Research Conference "Bergman Spaces and the Operators That Act on Them"
  • Lecture
    Seip, Kristian. (1994) Extensions of the Blaschke condition. 3rd Analysis Symposium

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