[personal profile] posic
Еще один мой доклад в Зуме. Среда, 1 апреля, с 11:30 до 12:30 по чешскому (летнему) времени. Семинар под названием "Cohomology in algebra, geometry, physics and statistics", Математического института чешской академии наук в Праге.

Анонс -- https://calendar.math.cas.cz/content/koszul-algebras-and-one-dependent-random-0-1-sequences

Title: Koszul algebras and one-dependent random 0-1 sequences

Abstract: Koszul algebras are a natural class of graded algebras with quadratic relations, defined by a series of homological conditions. To a Koszul algebra over a field with finite-dimensional components, one can assign a one-dependent stochastic 0-1 sequence, which carries information about the dimensions of the algebra's grading components. This construction allows to show that the Hilbert series of a Koszul algebra can be extended meromorphically to the circle of double radius. Conjecturally, such Hilbert series are meromorphic in the whole complex plane (and consequently, rational).

Материал моей (утраченной) дипломной работы на мехмате МГУ 1993 года, большей частью вошедшей в состав нашей с Сашей П. книжки про квадратичные алгебры (издательство AMS, 2005).

Это не первоапрельская шутка! Я сейчас готовлю слайды; будет ли доска -- не знаю.

01.04.2020 20:40 - Update: вот эти слайды -- http://users.math.cas.cz/~positselski/one-dependent-nopause.pdf
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Leonid Positselski

February 2026

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