Events
DMS Combinatorics Seminar |
Time: Oct 30, 2024 (02:00 PM) |
Location: 328 Parker Hall |
Details: Speaker: Rachel Galindo (Auburn University) Title: Vertex Coloring and Clique Containment
Abstract: This talk will consist of two separate, but related topics. The first: An equivalent version of the Borodin-Kostochka Conjecture, due to Cranston and Rabern, says that any graph with \(\chi = \Delta = 9\) contains \(K_3 \lor E_6\) as a subgraph. In this talk, we will discuss several results in support of this conjecture, where vertex-criticality and forbidden substructure conditions get us either close or all the way to containing \(K_3 \lor E_6\). The second: The Ore Degree is a graph parameter which has been proven to serve as an upper bound for the chromatic number. We define two new Ore-type graph parameters and present preliminary results towards showing they also can serve as upper bounds on \(\chi\). |