Steffen Oppermann
About
This is my official home page, created for me by the university administration. If you are looking for any further information, please visit my personal home page.
Publications
2023
-
Herschend, Martin;
Iyama, Osamu;
Minamoto, Hiroyuki;
Oppermann, Steffen.
(2023)
Representation Theory of Geigle-Lenzing Complete Intersections.
Memoirs of the American Mathematical Society.
volum 285 (1412).
Academic article
2020
-
Bauer, Ulrich;
Botnan, Magnus Bakke;
Oppermann, Steffen;
Steen, Johan.
(2020)
Cotorsion torsion triples and the representation theory of filtered hierarchical clustering.
Advances in Mathematics.
volum 369:107171.
Academic article
2019
-
Oppermann, Steffen;
Psaroudakis, Chrysostomos;
Stai, Torkil Utvik.
(2019)
Change of rings and singularity categories.
Advances in Mathematics.
volum 350.
Academic article
2017
-
Lerner, Boris;
Oppermann, Steffen.
(2017)
A RECOLLEMENT APPROACH to GEIGLE-LENZING WEIGHTED PROJECTIVE VARIETIES.
Nagoya mathematical journal.
volum 226.
Academic article
-
Nornes, Nils Melvær;
Oppermann, Steffen.
(2017)
Degenerations of Submodules and Composition Series.
Algebras and Representation Theory.
volum 20 (4).
Academic article
-
Oppermann, Steffen.
(2017)
Quivers for silting mutation.
Advances in Mathematics.
volum 307.
Academic article
2015
-
Bergh, Petter Andreas;
Oppermann, Steffen;
Jorgensen, David A.
(2015)
The Gorenstein defect category.
Quarterly Journal of Mathematics.
volum 66 (2).
Academic article
-
Oppermann, Steffen;
Reiten, Idun;
Thomas, Hugh.
(2015)
Quotient closed subcategories of quiver representations.
Compositio Mathematica.
volum 151 (3).
Academic article
2014
-
Amiot, Claire;
Oppermann, Steffen.
(2014)
Cluster equivalence and graded derived equivalence.
Documenta Mathematica.
volum 19 (2014).
Academic article
-
Amiot, Claire;
Oppermann, Steffen.
(2014)
Higher preprojective algebras and stably Calabi-Yau properties.
Mathematical Research Letters.
volum 21 (4).
Academic article
-
Bergh, Petter Andreas;
Jorgensen, David Alan;
Oppermann, Steffen.
(2014)
The negative side of cohomology for Calabi-Yau categories.
Bulletin of the London Mathematical Society.
volum 46 (2).
Academic article
-
Bergh, Petter Andreas;
Oppermann, Steffen;
Jorgensen, David Alan.
(2014)
The gorenstein defect category.
Quarterly Journal of Mathematics.
volum 66 (2).
Academic article
-
Herschend, Martin;
Iyama, Osamu;
Oppermann, Steffen.
(2014)
N-representation infinite algebras.
Advances in Mathematics.
volum 252.
Academic article
2013
-
Amiot, Claire;
Oppermann, Steffen.
(2013)
Algebras of acyclic cluster type: Tree type and type Ã.
Nagoya mathematical journal.
volum 211.
Academic article
-
Amiot, Claire;
Oppermann, Steffen.
(2013)
The Image of the Derived Category in the Cluster Category.
International Mathematics Research Notices (IMRN).
Academic article
-
Geiss, C;
Keller, B;
Oppermann, Steffen.
(2013)
n-angulated categories.
Journal für die Reine und Angewandte Mathematik.
volum 675.
Academic article
-
Iyama, Osamu;
Oppermann, Steffen.
(2013)
Stable categories of higher preprojective algebras.
Advances in Mathematics.
volum 244.
Academic article
2012
-
Bertani-Økland, Marco Angel;
Oppermann, Steffen;
Wrålsen, Anette.
(2012)
Graded mutation in cluster categories coming from hereditary categories with a tilting object.
Journal of Pure and Applied Algebra.
volum 216 (12).
Academic article
-
Oppermann, Steffen;
Stovicek, Jan.
(2012)
Generating the bounded derived category and perfect ghosts.
Bulletin of the London Mathematical Society.
volum 44.
Academic article
-
Oppermann, Steffen;
Thomas, Hugh.
(2012)
Higher-dimensional cluster combinatorics and representation theory.
Journal of the European Mathematical Society (Print).
volum 14 (6).
Academic article
2011
-
Bergh, Petter Andreas;
Oppermann, Steffen.
(2011)
Cluster tilting and complexity.
International Mathematics Research Notices (IMRN).
Academic article
-
Bergh, Petter Andreas;
Oppermann, Steffen.
(2011)
Cohomological symmetry in triangulated categories.
Journal of Algebra.
volum 347 (1).
Academic article
-
Bertani-Økland, Marco Angel;
Oppermann, Steffen.
(2011)
Mutating loops and 2-cycles in 2-CY triangulated categories.
Journal of Algebra.
volum 334 (1).
Academic article
-
Iyama, Osamu;
Oppermann, Steffen.
(2011)
n-REPRESENTATION-FINITE ALGEBRAS AND n-APR TILTING.
Transactions of the American Mathematical Society.
volum 363 (12).
Academic article
-
Miemietz, V;
Oppermann, Steffen.
(2011)
On the Representation Dimension of Schur Algebras.
Algebras and Representation Theory.
volum 14 (2).
Academic article
2010
-
Bergh, Petter Andreas;
Iyengar, Srikanth B.;
Krause, Henning;
Oppermann, Steffen.
(2010)
Dimensions of triangulated categories via Koszul objects.
Mathematische Zeitschrift.
volum 265 (4).
Academic article
-
Bertani-Økland, Marco Angel;
Oppermann, Steffen;
Wrålsen, Anette.
(2010)
Constructing tilted algebras from cluster-tilted algebras.
Journal of Algebra.
volum 323 (9).
Academic article
-
Bertani-Økland, Marco Angel;
Oppermann, Steffen;
Wrålsen, Anette.
(2010)
Finding a cluster-tilting object for a representation finite cluster-tilted algebra.
Colloquium Mathematicum.
volum 121 (2).
Academic article
-
Oppermann, Steffen.
(2010)
Hochschild cohomology and homology of quantum complete intersections.
Algebra & Number Theory.
volum 4 (7).
Academic article
-
Oppermann, Steffen.
(2010)
Representation dimension of quasi-tilted algebras.
Journal of the London Mathematical Society.
volum 81.
Academic article
-
Oppermann, Steffen.
(2010)
The dimension of the derived category of elliptic curves and tubular weighted projective lines.
Colloquium Mathematicum.
volum 119 (1).
Academic article
2009
-
Oppermann, Steffen.
(2009)
Lower bounds for Auslander's representation dimension.
Duke mathematical journal.
volum 148 (2).
Academic article
-
Oppermann, Steffen.
(2009)
Wild algebras have one-point extensions of representation dimension at least four.
Journal of Pure and Applied Algebra.
volum 213 (10).
Academic article
2008
-
Bergh, Petter Andreas;
Oppermann, S.
(2008)
The representation dimension of quantum complete intersections.
Journal of Algebra.
volum 320.
Academic article
-
Bergh, Petter Andreas;
Oppermann, S.
(2008)
Cohomology of twisted tensor products.
Journal of Algebra.
volum 320.
Academic article
Journal publications
-
Herschend, Martin;
Iyama, Osamu;
Minamoto, Hiroyuki;
Oppermann, Steffen.
(2023)
Representation Theory of Geigle-Lenzing Complete Intersections.
Memoirs of the American Mathematical Society.
volum 285 (1412).
Academic article
-
Bauer, Ulrich;
Botnan, Magnus Bakke;
Oppermann, Steffen;
Steen, Johan.
(2020)
Cotorsion torsion triples and the representation theory of filtered hierarchical clustering.
Advances in Mathematics.
volum 369:107171.
Academic article
-
Oppermann, Steffen;
Psaroudakis, Chrysostomos;
Stai, Torkil Utvik.
(2019)
Change of rings and singularity categories.
Advances in Mathematics.
volum 350.
Academic article
-
Lerner, Boris;
Oppermann, Steffen.
(2017)
A RECOLLEMENT APPROACH to GEIGLE-LENZING WEIGHTED PROJECTIVE VARIETIES.
Nagoya mathematical journal.
volum 226.
Academic article
-
Nornes, Nils Melvær;
Oppermann, Steffen.
(2017)
Degenerations of Submodules and Composition Series.
Algebras and Representation Theory.
volum 20 (4).
Academic article
-
Oppermann, Steffen.
(2017)
Quivers for silting mutation.
Advances in Mathematics.
volum 307.
Academic article
-
Bergh, Petter Andreas;
Oppermann, Steffen;
Jorgensen, David A.
(2015)
The Gorenstein defect category.
Quarterly Journal of Mathematics.
volum 66 (2).
Academic article
-
Oppermann, Steffen;
Reiten, Idun;
Thomas, Hugh.
(2015)
Quotient closed subcategories of quiver representations.
Compositio Mathematica.
volum 151 (3).
Academic article
-
Amiot, Claire;
Oppermann, Steffen.
(2014)
Cluster equivalence and graded derived equivalence.
Documenta Mathematica.
volum 19 (2014).
Academic article
-
Amiot, Claire;
Oppermann, Steffen.
(2014)
Higher preprojective algebras and stably Calabi-Yau properties.
Mathematical Research Letters.
volum 21 (4).
Academic article
-
Bergh, Petter Andreas;
Jorgensen, David Alan;
Oppermann, Steffen.
(2014)
The negative side of cohomology for Calabi-Yau categories.
Bulletin of the London Mathematical Society.
volum 46 (2).
Academic article
-
Bergh, Petter Andreas;
Oppermann, Steffen;
Jorgensen, David Alan.
(2014)
The gorenstein defect category.
Quarterly Journal of Mathematics.
volum 66 (2).
Academic article
-
Herschend, Martin;
Iyama, Osamu;
Oppermann, Steffen.
(2014)
N-representation infinite algebras.
Advances in Mathematics.
volum 252.
Academic article
-
Amiot, Claire;
Oppermann, Steffen.
(2013)
Algebras of acyclic cluster type: Tree type and type Ã.
Nagoya mathematical journal.
volum 211.
Academic article
-
Amiot, Claire;
Oppermann, Steffen.
(2013)
The Image of the Derived Category in the Cluster Category.
International Mathematics Research Notices (IMRN).
Academic article
-
Geiss, C;
Keller, B;
Oppermann, Steffen.
(2013)
n-angulated categories.
Journal für die Reine und Angewandte Mathematik.
volum 675.
Academic article
-
Iyama, Osamu;
Oppermann, Steffen.
(2013)
Stable categories of higher preprojective algebras.
Advances in Mathematics.
volum 244.
Academic article
-
Bertani-Økland, Marco Angel;
Oppermann, Steffen;
Wrålsen, Anette.
(2012)
Graded mutation in cluster categories coming from hereditary categories with a tilting object.
Journal of Pure and Applied Algebra.
volum 216 (12).
Academic article
-
Oppermann, Steffen;
Stovicek, Jan.
(2012)
Generating the bounded derived category and perfect ghosts.
Bulletin of the London Mathematical Society.
volum 44.
Academic article
-
Oppermann, Steffen;
Thomas, Hugh.
(2012)
Higher-dimensional cluster combinatorics and representation theory.
Journal of the European Mathematical Society (Print).
volum 14 (6).
Academic article
-
Bergh, Petter Andreas;
Oppermann, Steffen.
(2011)
Cluster tilting and complexity.
International Mathematics Research Notices (IMRN).
Academic article
-
Bergh, Petter Andreas;
Oppermann, Steffen.
(2011)
Cohomological symmetry in triangulated categories.
Journal of Algebra.
volum 347 (1).
Academic article
-
Bertani-Økland, Marco Angel;
Oppermann, Steffen.
(2011)
Mutating loops and 2-cycles in 2-CY triangulated categories.
Journal of Algebra.
volum 334 (1).
Academic article
-
Iyama, Osamu;
Oppermann, Steffen.
(2011)
n-REPRESENTATION-FINITE ALGEBRAS AND n-APR TILTING.
Transactions of the American Mathematical Society.
volum 363 (12).
Academic article
-
Miemietz, V;
Oppermann, Steffen.
(2011)
On the Representation Dimension of Schur Algebras.
Algebras and Representation Theory.
volum 14 (2).
Academic article
-
Bergh, Petter Andreas;
Iyengar, Srikanth B.;
Krause, Henning;
Oppermann, Steffen.
(2010)
Dimensions of triangulated categories via Koszul objects.
Mathematische Zeitschrift.
volum 265 (4).
Academic article
-
Bertani-Økland, Marco Angel;
Oppermann, Steffen;
Wrålsen, Anette.
(2010)
Constructing tilted algebras from cluster-tilted algebras.
Journal of Algebra.
volum 323 (9).
Academic article
-
Bertani-Økland, Marco Angel;
Oppermann, Steffen;
Wrålsen, Anette.
(2010)
Finding a cluster-tilting object for a representation finite cluster-tilted algebra.
Colloquium Mathematicum.
volum 121 (2).
Academic article
-
Oppermann, Steffen.
(2010)
Hochschild cohomology and homology of quantum complete intersections.
Algebra & Number Theory.
volum 4 (7).
Academic article
-
Oppermann, Steffen.
(2010)
Representation dimension of quasi-tilted algebras.
Journal of the London Mathematical Society.
volum 81.
Academic article
-
Oppermann, Steffen.
(2010)
The dimension of the derived category of elliptic curves and tubular weighted projective lines.
Colloquium Mathematicum.
volum 119 (1).
Academic article
-
Oppermann, Steffen.
(2009)
Lower bounds for Auslander's representation dimension.
Duke mathematical journal.
volum 148 (2).
Academic article
-
Oppermann, Steffen.
(2009)
Wild algebras have one-point extensions of representation dimension at least four.
Journal of Pure and Applied Algebra.
volum 213 (10).
Academic article
-
Bergh, Petter Andreas;
Oppermann, S.
(2008)
The representation dimension of quantum complete intersections.
Journal of Algebra.
volum 320.
Academic article
-
Bergh, Petter Andreas;
Oppermann, S.
(2008)
Cohomology of twisted tensor products.
Journal of Algebra.
volum 320.
Academic article