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Algebra Seminar

Organizers: Ela Celikbas and Olgur Celikbas

Fall 2020

The Auslander-Reiten conjecture for certainnon-Gorenstein Cohen-Macaulay rings (Introductory Talk)

Shinya Kumashiro | Chiba University, Japan 

Saturday, September 5 9:00 a.m.-10:00 a.m. | Virtual


The Auslander-Reiten conjecture for certainnon-Gorenstein Cohen-Macaulay rings (Introductory Talk)

Shinya Kumashiro | Chiba University, Japan

Saturday, September 5 9:00a.m.- 10:00 a.m. | Virtual

Castelnuovo-Mumfordregularity and its asymptotic behaviour (Introductory Talk)

Dipankar Ghosh | Indian Institute of Technology Hyderabad, India

Saturday, September 26 9:00 a.m.- 10:00 a.m. | Virtual

To attend virtually, send a request to Dr. Ela Celikba or Dr. Olgur Celikbas

Castelnuovo-Mumfordregularity and its asymptotic behaviour (Research Talk)

Dipankar Ghosh | Indian Institute of Technology Hyderabad, India

Saturday, October 3 9:00 a.m.- 10:00 a.m. | Virtual

To attend virtually, send a request to Dr. Ela Celkibas or Dr. Olgur Celikbas

A study of the structure of Sally modules (Introductory talk)

Kazuho Ozeki | Yamaguchi University, Japan

Saturday, October 10, 2020 9:00 a.m- 10:00 a.m. | Virtual

To attend virtually, send a request to Dr. Ela Celikbas or Dr. Olgur Celikbas

A study of the structure of Sally modules (Research Talk)

Kazuho Ozeki | Yamaguchi University, Japan

Saturday, October 17, 2020 9:00 a.m.- 10:00 a.m. | Virtual

Souvik Dey | University of Kansas, USA

Saturday, October 24, 2020 9:00 a.m.-10:00 a.m. | Virtual

To attend virtually, send a request to Dr. Ela Celikbas or Dr. Olgur Celikbas

FROBENIUS BETTI NUMBERS AND SYZYGIES OF FINITE LENGTHMODULES (Introductory Talk)

Parangama Sarkar | Indian Institute of Technology Palakkad, India

Saturday, October 31, 2020 9:00 a.m.- 10:00 a.m.  Virtual

To attend virtually, send a request to Dr. Ela Celikbas or Dr. Olgur Celikbas

FROBENIUS BETTI NUMBERS AND SYZYGIES OF FINITE LENGTHMODULES (Research Talk)

Parangama Sarkar | Indian Institute of Technology Palakkad, India

Saturday, November 7, 2020 9:00 a.m.- 10:00 a.am.

To attend virtually, send a request to Dr. Ela Celikbas or Dr. Olgur Celikbas


Semidualizing Modules and the Divisor Class Group of Ladder Determinantal Rings (Introductory Talk)


Tony Se | West Virginia University, USA

Saturday, November 14, 2020 9:00 a.m.- 10:00 a.m.

Tony Se | West Virginia University, USA

Saturday, November 21, 2020 9:00 a.m.- 10:00a.m.

Naoyuki Matsuoka | Meiji University, Japan

Saturday, December 5, 2020 9:00a.m.- 10:00 a.m.

Naoyuki Matsuoka | Meiji University, Japan

Saturday, December 12, 2020 9:00a.m.- 10:00 a.m.

To attend virtually, send a request to Dr. Ela Celikbas or Dr. Olgur Celikbas




Spring 2020

Introduction to Triangulated Categories in Commutative Algebra

Hiroki Matsui | University of Tokyo, Japan

Friday, January 24 4 – 5:30 p.m. at ARM 315

Monday, January 27 4:30 – 6 p.m. at ARM 315


Notes on Semidualizing Modules

Tony Se | West Virginia University

Friday, January 24, February 14, February 21, February 28 4 – 5 p.m. at ARM 315

Abstract: We will survey some aspects of semidualizing modules, theory and applications.


On Burch Rings

Toshinori Kobayashi | Nagoya University, Japan

Friday, March 6 4:30 – 6 p.m. at ARM 315

Monday, March 9 4:30 – 6 p.m. at ARM 315

Abstract: I will introduce a class of ideals and their affiliated rings, which we call Burch ideals and Burch rings. While their definitions are quite simple, our investigation shows that they enjoy remarkable ideal-theoretic and homological properties. I will give some basic properties of Burch rings. Especially, a characterization of Burch rings will be given in terms of the second syzygy of the residue field. I will also talk about a classification of subcategories and trivial vanishing of Tor over these rings.