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DTSTART:20210314T070000
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DTSTART:20201101T060000
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DTSTART;TZID=America/Toronto:20210329T113000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-gr
 aph-theory-seminar-gabriel-coutinho-1
SUMMARY:Algebraic Graph Theory Seminar - Gabriel Coutinho
CLASS:PUBLIC
DESCRIPTION:TITLE: Why are Hoffman's bounds for alpha and chi truly duals 
 of each\nother?\n\nSpeaker:\n Gabriel Coutinho\n\nAffiliation:\n Universid
 ade Federal de Minas Gerais\, Brazil\n\nZoom:\n Contact Soffia Arnadottir\
 n\nABSTRACT:\n\nTwo of the most well known eigenvalue bounds for graph par
 ameters look\nsuspiciously related. Our goal in this talk is to confirm th
 is\nsuspicion by casting these bounds into a framework of semidefinite\nop
 timization that will give us almost for free a duality relation. As\none s
 hould always expect in this context\, we will see a connection to\nthe Lov
 ász theta function of a graph.
DTSTAMP:20260405T192144Z
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