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pro vyhledávání: '"Opper, Sebastian"'
Autor:
Opper, Sebastian
The paper introduces a partial integration map from the first Hochschild cohomology of any cohomologically unital A-infinity category over a field of characteristic zero to its derived Picard group. We discuss useful properties such as injectivity, n
Externí odkaz:
http://arxiv.org/abs/2405.14448
Autor:
Opper, Sebastian, Zvonareva, Alexandra
Publikováno v:
Advances in Mathematics, Volume 402 (2022), 108341
We classify Brauer graph algebras up to derived equivalence by showing that the set of derived invariants introduced by Antipov is complete. These algebras first appeared in representation theory of finite groups and can be defined for any suitably d
Externí odkaz:
http://arxiv.org/abs/2103.12049
Autor:
Opper, Sebastian
This paper studies the class of spherical objects over any Kodaira $n$-cycle of projective lines and provides a parametrization of their isomorphism classes in terms of closed curves on the $n$-punctured torus without self-intersections. Employing re
Externí odkaz:
http://arxiv.org/abs/2011.08288
Autor:
Opper, Sebastian
We study triangulated categories which can be modeled by an oriented marked surface $\mathcal{S}$ and a line field $\eta$ on $\mathcal{S}$. This includes bounded derived categories of gentle algebras and -- conjecturally -- all partially wrapped Fuka
Externí odkaz:
http://arxiv.org/abs/1904.04859
In this paper, we construct a geometric model for the bounded derived category of a gentle algebra. The construction is based on the ribbon graph associated to a gentle algebra by the third author, and is linked to partially wrapped Fukaya categories
Externí odkaz:
http://arxiv.org/abs/1801.09659
Autor:
Opper, Sebastian, Zvonareva, Alexandra
Publikováno v:
In Advances in Mathematics 25 June 2022 402
Autor:
Opper, Sebastian
The main purpose of this thesis is the study of bounded derived categories of gentle algebras and related problems by means of surface models. In the first chapter we construct surface models for such categories and describe a variety of connections
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______199::a83ccda08bb2ccb8dc1743d44252ba46
https://kups.ub.uni-koeln.de/9662/
https://kups.ub.uni-koeln.de/9662/
Autor:
Olšák, Radek
The thesis presents different algebraic approaches to solving high school geometry problems. In particular, it shows the use of circle pencils, Desargues involution, the Method of Animation, and elliptic curves. It contains selected problems with sol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2186::c8469e9a09dd96d60e165a832d8fa57f
http://www.nusl.cz/ntk/nusl-506938
http://www.nusl.cz/ntk/nusl-506938