[Binghamton Geometry Topology Seminar] GT Seminar: Thomas Brazelton speaks on Thursday

[Cary Malkiewich]

Hi everyone,

A quick reminder that Thomas Brazelton's talk is today, and the colloquium
is after that!

Both the speaker and I will not be able to come to lunch today, so there
won't be an official lunch, but feel free to gather with other topologists
at the usual time.

See you at the talk!

Cary

On Mon, Oct 31, 2022 at 12:13 PM Cary Malkiewich <
malkiewich at math.binghamton.edu> wrote:

> Hi everyone,
>
> This week we are pleased to have Thomas Braelton (Penn) speaking about
> enumerative geometry in the presence of a group action. This will be an *in
> person talk*, on Thursday at 2:50pm in WH 100E.
>
> We will meet at noon outside WH100E to take the speaker to lunch. See you
> there!
>
> Remember we will also have a colloquium by Avy Soffer, after Thomas's talk
> (and cookies!) are over.
>
> Best,
> Cary and Roman
>
> %%%%%%%%%%%%%%%%%%%%%%%%%%%%
> Title: Equivariant enumerative geometry
> Abstract: Classical enumerative geometry asks geometric questions of the
> form "how many?" and expects an integral answer. For example, how many
> circles can we draw tangent to a given three? How many lines lie on a cubic
> surface? The fact that these answers are well-defined integers, independent
> upon the initial parameters of the problem, is Schubert’s principle of
> conservation of number. In this talk we will outline a program of
> "equivariant enumerative geometry", which wields equivariant homotopy
> theory to explore enumerative questions in the presence of symmetry. Our
> main result is equivariant conservation of number, which states roughly
> that the sum of regular representations of the orbits of solutions to an
> equivariant enumerative problem are conserved.
>
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