Dr. Severin Barmeier



Telephone:+49 (0)761 203 - 97922
Fax:+49 (0)761 203 - 5541
Office hours:by arrangement
Address: Mathematisches Institut
Abteilung Reine Mathematik
Albert-Ludwigs-Universität Freiburg
Ernst-Zermelo-Str. 1
79104 Freiburg i. Br.

Research interests

I am developing new techniques in the deformation theory of algebraic structures arising in geometry, such as deformations of associative algebras, algebraic varieties, Abelian categories or A∞-categories.

Publications and preprints

  1. Learning scattering amplitudes by heart, with Koushik Ray, arXiv
  2. Deformations of path algebras of quivers with relations, with Zhengfang Wang, arXiv
  3. Quantizations of local surfaces and rebel instantons, with E. Gasparim, forthcoming in J. Noncommut. Geom. arXiv
  4. Deformation–obstruction theory for diagrams of algebras and applications to geometry, with Y. Frégier, J. Noncommut. Geom. 14 (3), 1019–1047 (2020) arXiv, journal
  5. Classical deformations of noncompact surfaces and their moduli of instantons, with E. Gasparim, J. Pure Appl. Algebra 223 (6), 2543–2561 (2019) arXiv, journal
  6. A Lie theoretical construction of a Landau–Ginzburg model without projective mirrors, with E. Ballico, E. Gasparim, L. Grama, L. A. B. San Martin, Manuscripta Math. 158 (1–2), 85–101 (2019) arXiv, journal
  7. Deformations of the discrete Heisenberg group, Proc. Japan Acad. Ser. A Math. Sci. 89 (4), 55–59 (2013) pdf, arXiv, journal
  8. Isomorphisms of moduli spaces, with C. C. Amilburu, B. Callander, E. Gasparim, in Proceedings Second Latin Congress on Symmetries in Geometry and Physics, Mat. Contemp. 41, 1–16 (2012) pdf, arXiv, journal