Monday, February 7, 2022

Monday, February 7, 2022 — 11:30 to 11:30 AM EST

Title: Optimizing sums of eigenvalues

Speaker: Gabriel Coutinho Affiliation: Universidade Federal de Minas Gerais Zoom: Contact Sabrina Lato

Abstract:

In its original proof, Hoffman's well known lower bound to the chromatic number is obtained after replacing several terms of a sum of eigenvalues by the smallest eigenvalue of the graph.

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