Forbidden Minor Results for Flag Matroids

Series
Algebra Seminar
Time
Monday, March 10, 2025 - 1:00pm for 1 hour (actually 50 minutes)
Location
Skiles 005
Speaker
Nathaniel Vaduthala – Tulane University
Organizer
Changxin Ding

Please Note: There will be a pre-seminar from 10:55 to 11:15 in Skiles 005.

Similar to how matroids can be viewed as a combinatorial abstraction of linear subspaces, a flag matroid can be viewed as a combinatorial abstraction of a nested sequence of linear subspaces. In this talk, we will discuss forbidden minor results that describe precisely when a flag matroid is representable and when it is graphic.