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DTSTART:20250309T070000
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DTSTART;TZID=America/Toronto:20250407T113000
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URL:https://uwaterloo.ca/combinatorics-and-optimization/events/algebraic-gr
 aph-theory-stefano-lia
SUMMARY:Algebraic Graph Theory-Stefano Lia
CLASS:PUBLIC
DESCRIPTION:TITLE: New Strongly Regular Graphs from Finite Semifields and 
 Finite\nGeometry\n\nSPEAKER:\n\nStefano Lia\n\nAFFILIATION:\n\nUmeå Unive
 rsity\n\nLOCATION:\n Please contact Sabrina Lato for Zoom link.\n\nABSTR
 ACT: Finite geometry often provides natural examples of highly\nstructured
  combinatorial objects\, many of which exhibit strong\nsymmetry properties
 . \n\nIn particular\, many constructions of strongly regular graphs arise
 \nfrom classical geometric configurations. In this talk\, we will present\
 ntwo new constructions of quasi-polar spaces\, that give rise to two\nfami
 lies of pairwise non-isomorphic strongly regular graphs\, having\nthe same
  non-trivial automorphism group.\n\nBoth constructions are related to a pa
 ir of commuting polarities in a\nprojective space. Surprisingly\, one of t
 hese constructions is\nconnected to the algebraic structure of finite semi
 fields and their\ntensor representation.
DTSTAMP:20260403T082659Z
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