Algebra and Algebraic Geometry Seminar Fall 2022

The Seminar takes place on Fridays at 2:30 pm, either virtually (via Zoom) or in person in room B235 Van Vleck.

Algebra and Algebraic Geometry Mailing List

• Please join the AGS mailing list by sending an email to ags+join@g-groups.wisc.edu to hear about upcoming seminars, lunches, and other algebraic geometry events in the department (it is possible you must be on a math department computer to use this link).

Fall 2022 Schedule

date	speaker	title	host/link to talk
October 7th	TBA	TBA	Reserved for the arithmetic geometry workshop
October 14th	Thomas Yahl	Computing Galois groups of finite Fano problems	Rodriguez
October 21st	Lino Amorim	Morita invariance of Categorical Enumerative Invariants	Andrei
November 4th	Chris Eur	TBD	Rodriguez/Wang

Abstracts

Thomas Yahl (TAMU)

Computing Galois groups of finite Fano problems

A Fano problem consists of enumerating linear spaces of a fixed dimension on a variety, generalizing the classical problem of the 27 lines on a smooth cubic surface. Those Fano problems with finitely many linear spaces have an associated Galois group that acts on these linear spaces and controls the complexity of computing them in coordinates via radicals. Galois groups of Fano problems have been studied both classically and modernly and have been determined in some special cases. We use computational tools to prove that several Fano problems of moderate size have Galois group equal to the full symmetric group, each of which were previously unknown.