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DTSTART:20200308T070000
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DTSTART;TZID=America/Toronto:20201130T113000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-gr
 aph-theory-seminar-krystal-guo-4
SUMMARY:Algebraic Graph Theory Seminar - Krystal Guo
CLASS:PUBLIC
DESCRIPTION:TITLE: Simple eigenvalues of graph\n\nSpeaker:\n Krystal Guo\n
 \nAffiliation:\n University of Amsterdam\n\nZoom:\n Contact Soffia Arnadot
 tir\n\nABSTRACT:\n\nIf v is an eigenvector for eigenvalue λ of a graph X 
 and α is an\nautomorphism of X\, then α(v) is also an eigenvector for λ
 . Thus it\nis rather exceptional for an eigenvalue of a vertex-transitive 
 graph\nto be simple. We study cubic vertex-transitive graphs with a\nnon-t
 rivial simple eigenvalue\, and discover remarkable connections to\narc-tra
 nsitivity\, regular maps and Chebyshev polynomials.
DTSTAMP:20260406T173621Z
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