Dear all,

This is a gentle reminder that we have a seminar today in 123 St. Paul's between 12:30 and 13:30. Out speaker is Marshall Kaatz. Please see the previous email for more details about his talk.

Lunch will be served as usual. See you all in the seminar!

Sincerely,
Berkant

From: Berkant Cunnuk <cunnukb@myumanitoba.ca>
Sent: Monday, October 20, 2025 5:50 AM
To: um-gms@lists.umanitoba.ca <um-gms@lists.umanitoba.ca>
Cc: Marshall Kaatz <kaatzm1@myumanitoba.ca>
Subject: [GMS] Grad Seminar on October 22, Wednesday
 
Dear GMS,

I hope you're all doing well!

We will have a seminar on 22th of October, Wednesday in 123 St. Paul's between 12:30 and 13:30. Our speaker is @Marshall Kaatz. The details about his talk are below.

Title: Building the foundations for a new Ramsey-type problem

Abstract: Ramsey numbers have gained notoriety over the last century for the difficulty of computing exact values or even improving known bounds, and have given rise to a large family of Ramsey-type problems. The classical theorem of Ramsey can be rephrased in terms of independent sets: in large enough graphs, either the graph or its complement will have a large independent set.

In this talk, I present a natural analogous problem to that of the classical Ramsey numbers. Observing that an independent set is a special case of an acyclic set in a graph — that is, a set of vertices which induces no cycles — we instead study how in large enough graphs, either the graph or its complement will have a large acyclic set. In addition to presenting key theorems and constructions, I will discuss some small non-trivial exact values and best-known bounds.

The seminar can also be accessed from Zoom:
Meeting ID: 619 0474 9902
Passcode: 846191

See you all in the seminar!

Sincerely,
Berkant
GMS Executive