Prof. Dr. Stefan Schreieder

• Arbeitsseminar: Brauer Groups, Di 14-16 in F107
  Programm
• Oberseminar: Algebraische Geometrie, Do 16-18 in F142
  Programm

Laufzeit: 01.04.2021--31.03.2027
Webseite mit weiteren Informationen: hier

Sprecher: St. Schreieder
Ko-Sprecher: G. Farkas
Laufzeit: 01.10.2024--30.09.2029 
Webseite mit weiteren Informationen: hier

• On the degree of subvarieties on abelian varieties, (with P. Engel), 
  Preprint 2026, arXiv:2606.31894
   
• Divisibility phenomena in motivic Bloch--Ogus theory, (with J.L. Colliot-Thélène), 
  Preprint 2026, arXiv:2605.22494
   
• Optimality of the Prym-Tyurin construction for A_6, (with P. Engel and O. de Gaay Fortman), 
  Preprint 2025, arXiv:2512.04902
   
• Rationality of hypersurfaces,
  arXiv:2510.13679, to appear in the Proceedings of the ICM 2026
   
• Matroids and the integral Hodge conjecture for abelian varieties, (with P. Engel and O. de Gaay Fortman), Preprint 2025, arXiv:2507.15704
   
• Combinatorics and Hodge theory of degenerations of abelian varieties: A survey of the Mumford construction, (with P. Engel and O. de Gaay Fortman), Preprint 2025, arXiv:2507.15695
   
• On the rationality problem for low degree hypersurfaces, (with J. Lange),
  Forum of Mathematics, Pi 13 (2025) e25, 1-31. doi:10.1017/fmp.2025.10016
   
• Remarks on Milnor K-theory and Tate's conjecture for divisors,
  arXiv:2406.18706, to appear in Commentarii Mathematici Helvetici
   
• Cycle conjectures and birational invariants over finite fields, (with S. Balkan)
  arXiv:2406.14438, to appear in Selecta Mathematica
   
• Truncated pushforwards and refined unramified cohomology, (with Th. Alexandrou)
  arXiv:2406.07092, to appear in Advances in Mathematics
   
• Abelian varieties with no powers isogenous to Jacobians, (with O. de Gaay Fortman)
  Compositio Mathematica 161 (2025), 1404--1457.
   
• Geometric retract rationality of norm varieties,
  Math. Research Letters  31 (2024), 1189--1196.
   
• Zeros of one-forms and homologically trivial fibrations, (with Ruijie Yang)
  Michigan Math. Journal 75 (2025), 917--926.
   
• On Bloch's map for torsion cycles over non-closed fields, (with Th. Alexandrou)
  Forum of Mathematics, Sigma 11 (2023) e53, 1–21.
   
• A moving lemma for cohomology with support,
  EPIGA, Special volume in honour of C. Voisin, Article No. 20 (2024), 50 pages.
   
• The diagonal of quartic fivefolds, (with N. Pavic),
  Algebraic Geometry 10 (6) (2023), 754--778.
   
• Infinite torsion in Griffiths groups,
  J. Eur. Math. Soc. 27 (2025), 2571-2601.
   
• Refined unramified cohomology of schemes,
  Compositio Mathematica 159 (2023), 1466-1530.
   
• Unramified cohomology, algebraic cycles and rationality,
  in: G. Farkas et al. (eds), Rationality of Varieties,
  Progress in Mathematics 342, Birkhäuser (2021), 345--388.
   
• Equality in the Bogomolov--Miyaoka--Yau inequality in the non-general type case, (with F. Hao)
  J. reine angew. Math. 775 (2021), 87--115.
   
• Torsion orders of Fano hypersurfaces
  Algebra & Number Theory 15 (2021), 241--270.
   
• Holomorphic one-forms without zeros on threefolds, Correction, (with F. Hao)
  Geometry & Topology 25 (2021), 409--444.
   
• Zeros of holomorphic one-forms and topology of Kähler manifolds,
  (Appendix written jointly with H.-Y. Lin)
  International Mathematics Research Notices, 2021, no. 8, 6169--6183.
   
• Variation of stable birational types in positive characteristic
  Épijournal de Géométrie Algébrique 3 (2019), Article Nr. 20.
   
• The construction problem for Hodge numbers modulo an integer, (with M. Paulsen)
  Algebra & Number Theory 13 (2019), 2427--2434.
   
• Chern numbers of some uniruled threefolds, (with L. Tasin)
  in: E. Colombo et al. (eds), Birational Geometry and Moduli Spaces,
  Springer INdAM Series 39, Springer 2020, 189--200.
   
• On deformations of quintic and septic hypersurfaces, (with J.C. Ottem)
  Journal de Mathématiques Pures et Appliquée 135 (2020), 140--158.
   
• Stably irrational hypersurfaces of small slopes
  Journal of the AMS 32 (2019), 1171--1199.
   
• The Kuga-Satake construction under degeneration, (with A. Soldatenkov)
  Journal of the Institute of Mathematics of Jussieu 19 (2020), 2165--2182.
   
• Quadric surface bundles and stable rationality
  Algebra & Number Theory 12 (2018), 479--490.
   
• On the rationality problem for quadric bundles
  Duke Math. Journal 168 (2019), 187--223.
   
• On the number and boundedness of log minimal models of general type,
  (with D. Martinelli and L. Tasin)
  Annales scientifiques de l'ÉNS  53 (2020), 1183--1210.
   
• Kähler structures on spin 6-manifolds, (with L. Tasin)
  Mathematische Annalen 373 (2019), 397--419.
   
• Generic vanishing and minimal cohomology classes on abelian fivefolds,
  (with S. Casalaina-Martin and M. Popa)
  Journal of Algebraic Geometry 27 (2018), 553--581.
   
• Decomposable theta divisors and generic vanishing
  International Mathematics Research Notices 2017, Issue 16, 4984--5009.
   
• Algebraic structures with unbounded Chern numbers, (with L. Tasin)
  Journal of Topology 9 (2016), 849--860.
   
• Theta divisors with curve summands and the Schottky problem
  Mathematische Annalen 365 (2016), 1017--1039.
   
• Multiplicative sub-Hodge structures of conjugate varieties
  Forum of Mathematics, Sigma 2 (2014), e1, 37pp.
   
• On the construction problem for Hodge numbers
  Geometry & Topology 19 (2015), 295--342.
   
• The Hodge ring of Kähler manifolds, (with D. Kotschick)
  Compositio Math. 149 (2013), 637--657.
   
• Dualization invariance and a new complex elliptic genus
  J. reine angew. Math. 692 (2014), 77--108.

• 11/2015: PhD, University of Bonn (Advisor: D. Huybrechts)
• 2011-2012: Trinity College, Cambridge: Part III of Mathematical Tripos
• 2008-2011: Studies of Mathematics at LMU Munich: B.Sc. and M.Sc.

• since 03/2020: Professor (W3), Chair, Leibniz University Hannover
• 2017-2020: Professor (W2), LMU Munich
• 2015-2017: Assistant, University of Bonn
• 2012-2015: Doctoral student, Max-Planck-Institute Bonn

• since 2026: Manuscripta Mathematica
• since 2023: Bulletin of the London Mathematical Society
• since 2023: Journal of the London Mathematical Society

• Invited Sectional Lecture at ICM 2026 (Philadelphia, USA)
• ERC Starting Grant 2020
• Hausdorff-Memorial Prize, awarded for best PhD thesis in the academic year 2015/16 at University of Bonn
• Compositio Prize Finalist: joint paper with D. Kotschick was nominated among the three best papers that appeared in Compositio Mathematica in the period 2011-2013
• Bundeswettbewerb Mathematik 2007: National winner of federal math competition for highschool students in Germany