sebastian schlegel mejia

From November 2023 I am at the MPIM in Bonn.

Please don't hesitate to email:


see my arXiv, Google Scholar, or ORCID: 0000-0001-6782-2533

List in reverse chronological arXiv posting order. Title links point to the arXiv pages.

  1. BPS algebras and generalised Kac–Moody algebras from 2-Calabi–Yau categories, joint with Ben Davison and Lucien Hennecart, March 2023
  2. BPS Lie algebras for totally negative 2-Calabi–Yau categories and nonabelian Hodge theory for stacks, joint with Ben Davison and Lucien Hennecart, December 2022 (submitted)
  3. BPS cohomology for rank 2 degree 0 Higgs bundles (and more), Journal of Algebra, Volume 636, 2023, pp. 666-694


November 13-17, visiting University of Luxembourg, talk on November 15
November 27, talk at University of Zurich