Severin Barmeier

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News

Research interests

My main research centres around noncommutative algebraic geometry, representation theory and mathematical physics. I am developing new techniques in the deformation theory of algebraic structures to describe and study

Together with Zhengfang Wang I developed a combinatorial approach to the deformation theory of associative algebras (in this paper). Jointly with Daniel Labardini Fragoso I am developing a visual applet implementing this method to help with the combinatorics when studying particular examples: QUIVERed.

I am also working on a (for now) separate line of research concerning

CV

I am currently a postdoc at the University of Cologne in the group of Sibylle Schroll.

Short biography

My CV is available as PDF.

Articles

In progress

Preprints

Journal publications

PhD project

Master's project

Graduate research

Theses

Videos

Conference and seminar organization

Conferences, workshops and research schools

Research seminars

Diagrams

A vanishing cycle and its two thimbles in a symplectic Lefschetz fibration with two critical points (from my PhD thesis)

14 intermediate t-structures on the derived category of the A₃ quiver 1 → 2 → 3 and their hearts (shaded) and projective objects (circled) (from this paper on scattering amplitudes)

A picture of the quiver for the extended Khovanov arc algebra K₂² (from this paper on Stroppel's Conjecture)

Miscellaneous

Talks

2024

2023

2022

2021

2020

2019

Teaching

Supervision

Courses

University of Cologne

University of Freiburg

State University of Campinas

Links

Contact

Email

s.barmeier ⟨æт⟩ gmail.com

Address

Mathematical Institute
University of Cologne
Weyertal 86-90
50931 Köln
Germany