Background and activities

Eduard Ortega is a Professor at the Department of Mathematical Sciences since 2014 after postdoctoral positions at the University of Southern Denmar (2007-2009), University of Copenhagen (2009-2010) and NTNU (2010-2012). He is a member of the Analysis Group. Eduard Ortega has a MSc, and a PhD both from the Univeristat Autonoma de Barcelona.

His research interests are in Operator algebras, dynamical systems and ring theory.

Keywords: C*-algebra, Groupoid, Graph algebras, Topological full group.


  • 1997-2000 Senior Analyst in EDS
  • 2001-2007 Assistant professor (part-time), Universitat Autònoma de Barcelona, Spain. 
  • 2007-2009  Post. Doc., University of Southern Denmark, Denmark.
  • 2009-2010 Post. Doc., University of Copenhagen, Denmark. 
  • 2010-2012  Post. Doc., NTNU, Trondheim, Norway.
  • 2014-2015  Guest Associate Professor. NTNU, Trondheim, Norway.
  • 2015 - 2021 Associated Professor. NTNU, Trondheim, Norway.
  • 2022 - present. Professor. NTNU. Trondheim, Norway.



  • MA1102 Grunnkurs i analyse II
  • TMA4120 Matematikk 4K
  • TMA4230 Functional Analysis
  • MA8107 Operator Algebras


  • 2017 Thale Ness (Bachelor).
  • 2016- 2020 Petter Nyland (Ph.D. main supervisor)
  • 2017-2021 Are Austad (Ph.D. co-supervisor)
  • 2017 - 2021 Eirik Skrettingland (Ph.D. co-supervisor)
  • 2021 Max Hauge (Bachelor)
  • 2021-...  Mathias Palmstrøm (Ph.D. main supervisor)
  • 2021-... Erling A. T. Svela (Master)
  • 2021-... Einar V. Hetland (Master)



  •  E. Ortega, E. Scarparo. Almost finiteness and homology for certain non-free actions. To appear in Groups, Geometry and Dynamics. arXiv:2007.02329
  •  P. Nyland, E. Ortega. Matui’s AH-conjecture for graph groupoids.  To appear in Documenta Mathematica arXiv:2003.14055
  •  E. Ortega, A. Sanchez. The homology of the groupoid of the self-similar infinite dihedral group. To appear in Math. Scand. arXiv:2011.02554
  • P. Nyland, E. Ortega. Katsura--Exel--Pardo Groupoids and the AH~Conjecture, to appear in the J. Lond. Math. Soc.  arXiv:2007.06638
  • Austad, E. Ortega.  Groupoids and Hermitian Banach *-algebras. Submitted to publication. arXiv:2105.14793
  • E. Ortega, E. Pardo. Zappa-Szép products for partial actions of groupoids on left cancellative small categories.


Scientific, academic and artistic work

Displaying a selection of activities. See all publications in the database







  • Ortega Esparza, Eduardo; Pardo, E. (2013) The Structure of Stacey Crossed Products by Endomorphisms. Operator Algebra and Dynamics.




  • Ortega Esparza, Eduardo; Ara, Pere; Mathieu, M. (2009) The maximal C*-algebra of quotients as an operator bimodule. Archiv der Mathematik. vol. 92.



  • Ortega Esparza, Eduardo. (2006) Rings of quotients of incidence algebras and path algebras. Journal of Algebra. vol. 303.