Some title

Some Person

USomething

Wednesday

Sept. 3, 2014

8:00-8:50am

Vincent Hall 313

Some Abstract. $e^x$

Coxeter transformation on cominuscule posets

Emine Yıldırım

UQAM

Friday

Sept. 15, 2017

3:35-4:25pm

Vincent Hall 570

Let $P$ be a cominuscule poset which can be thought of as a parabolic analogue of the poset of positive roots of a finite root system. Let $J(P)$ be the poset of order ideals of $P$. In this talk, we will investigate the periodicity of the Coxeter transformation on the poset $J(P)$, and show that the Coxeter transformation has finite order for two of the three infinite families of cominuscule posets, and the exceptional cases. Our motivation comes from a conjecture by Chapoton which states that the Coxeter transformation has finite order on the poset $J(R)$ when $R$ is the poset of positive roots of a finite root system. Our solution is formulated in representation theory of finite dimensional algebras, and we will further discuss the results within the same context.

Random Flag Complexes and Asymptotic Syzygies

Jay Yang

UWisconsin

Friday

Sept. 22, 2017

Vincent Hall 016

We use the probabilistic method to construct examples of conjectured phenomenon about asymptotic syzygies. In particular, we use the Stanley-Reisner ideals of random flag complexes to construct new examples of Ein and Lazarsfeld's nonvanishing for asymptotic syzygies and of Ein, Erman, and Lazarsfeld's conjectural on the asymptotic normal distribution of Betti numbers.

TBA

Steven Karp

Michigan

Friday

Sept. 29, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

Dennis Stanton

UMN

Friday

Oct. 6, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

TBA

TBA

Friday

Oct. 13, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

Sam Hopkins

MIT

Friday

Oct. 20, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

Eric Bucher

Michigan State

Friday

Oct. 27, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

Hugh Thomas

UQAM

Friday

Nov. 3, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

Galyna Dobrovolska

Columbia

Friday

Nov. 10, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

Damir Yeliussizov

UCLA

Friday

Nov. 17, 2017

3:35-4:25pm

Vincent Hall 570

TBA

Friday

Nov. 24, 2017

TBA

Vladimir Baranovsky

UC Irvine

Friday

Dec. 1, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

TBA

TBA

Friday

Dec. 8, 2017

3:35-4:25pm

Vincent Hall 570

TBA

TBA

Shira Viel

NCSU

Friday

Dec. 15, 2017

3:35-4:25pm

Vincent Hall 570

TBA

- Seminar meets on Fridays 3:35–4:25 in room 570 of Vincent Hall.
- Seminar announcement list sign-up.
- Organizers: Gregg Musiker and Mike Chmutov. Website maintained by Mike Chmutov.
- Past seminar archive.