Mathematical Sciences Department
Discrete Math Seminar
Speaker: Harmony Zhan, WPI
Monday, October 2, 2023
3:00 pm - 3:50 pm
Unity Hall 405
Title: The second largest eigenvalue of a tree
Abstract: I will talk about the second largest adjacency eigenvalue of a tree with prescribed number of vertices and diameter. In particular, any tree that maximizes the second largest eigenvalue in this family must be a caterpillar with at most two bouquets. This is part of ongoing work with Kumar, Mohar and Pragada.