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Семинар отдела алгебры и отдела алгебраической геометрии (семинар И. Р. Шафаревича)
12 ноября 2019 г. 15:00, г. Москва, МИАН, комн. 540 (ул. Губкина, 8)
 


Minimal models for monomial algebras

P. Tamaroff

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Аннотация: In 1985, David Anick defined a combinatorial notion chains which can be used to compute various homological invariants of an associative algebra from a presentation of such an algebra by generators and relations that leads to a good rewriting system. In particular, for algebras with monomial relations, his construction produces those invariants directly.
In this talk, I will explain how to compute a rich algebraic structure on Anick chains leading to the explicit formula for a minimal quasi-free model for any monomial algebra. This computation relies on algebraic discrete Morse theory and on homotopy transfer formulas; those are formulas perfectly suited for homological computations where underlying chain complexes are of combinatorial nature. Prior knowledge of these techniques is not required: they will be explained along the way. Additionally, we explain how can extends the methods used for monomial algebras to algebras with a good rewriting system in the form of a conjecture and some examples.

Язык доклада: английский
 
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