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SUMMARY:Emmanuel Kowalski (ETH Zurich)
DTSTART:20250522T143000Z
DTEND:20250522T145500Z
DTSTAMP:20260423T041653Z
UID:CANT2025/40
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CANT2025/40/
 ">Some pseudorandom graphs</a>\nby Emmanuel Kowalski (ETH Zurich) as part 
 of Combinatorial and additive number theory (CANT 2025)\n\nLecture held in
  CUNY Graduate Center - Science Center (4th floor).\n\nAbstract\nA classic
 al construction associates to any Sidon set a graph without\n$4$-cycles. W
 e investigate some properties of these graphs in the case\nof the Sidon se
 ts constructed by Forey\, Fres\\' an and myself using methods\nof algebrai
 c geometry. In particular\, this provides deterministic\nfamilies of Raman
 ujan graphs with semi-circle and other interesting\nexplicit asymptotic ei
 genvalue distributions.\n \nBased on joint work with A. Forey and J. Fres\
 \' an and discussions with\nY. Wigderson and T. Schramm.\n
LOCATION:https://researchseminars.org/talk/CANT2025/40/
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