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DTSTART:20200308T070000
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DTSTART:20201101T060000
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DTSTART;TZID=America/Toronto:20201116T113000
SEQUENCE:0
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-gr
 aph-theory-seminar-xiaohong-zhang-0
SUMMARY:Algebraic Graph Theory Seminar - Xiaohong Zhang
CLASS:PUBLIC
DESCRIPTION:TITLE: Fractional revival on graphs\n\nSpeaker:\n Xiaohong Zha
 ng\n\nAffiliation:\n University of Waterloo\n\nZoom:\n Contact Soffia Arna
 dottir\n\nABSTRACT:\n\nLet A be the adjacency matrix of a weighted graph\,
  and let\nU(t)=exp(itA). If there is a time t such that U(t)e_a=\\alpha e_
 a+\\beta\ne_b\, then we say there is fractional revival (FR) between a and
  b. For\nthe special case when \\alpha=0\, we say there is perfect state t
 ransfer\n(PST) between vertices a and b. It is known that PST is monogamou
 s\n(PST from a to b and PST from a to c implies b=c) and vertices a b are\
 ncospectral in this case. If \\alpha\\beta\\neq 0\, then there is proper\n
 fractional revival.
DTSTAMP:20260406T101605Z
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