Title of Seminar: Algebraic Geometry Preprint Seminar 2022
Title of Talk: Finite generation of certain valuation semigroups on toric surfaces
Speaker: Jyoti Dasgupta, TIFR, Mumbai
Date: February 22, 2023
Time: 16:00:00 Hours
Venue: AG-77
Abstract: In this talk, we will discuss a preprint of Klaus Altmann, Christian Haase, Alex Kuronya, Karin Schaller, and Lena Walter, available at https://arxiv.org/abs/2209.06044. Finite generation of semigroups or rings arising from geometric situations has been a question of interest for a long time. In this preprint, the authors consider valuation semigroups arising from Newton-Okounkov theory in the special case of toric surfaces. They provide a combinatorial criterion for the finite generation of a valuation semigroup associated with an ample divisor on a smooth toric surface and a non-toric valuation of maximal rank.
Title of Talk: Finite generation of certain valuation semigroups on toric surfaces
Speaker: Jyoti Dasgupta, TIFR, Mumbai
Date: February 22, 2023
Time: 16:00:00 Hours
Venue: AG-77
Abstract: In this talk, we will discuss a preprint of Klaus Altmann, Christian Haase, Alex Kuronya, Karin Schaller, and Lena Walter, available at https://arxiv.org/abs/2209.06044. Finite generation of semigroups or rings arising from geometric situations has been a question of interest for a long time. In this preprint, the authors consider valuation semigroups arising from Newton-Okounkov theory in the special case of toric surfaces. They provide a combinatorial criterion for the finite generation of a valuation semigroup associated with an ample divisor on a smooth toric surface and a non-toric valuation of maximal rank.