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DTSTART;TZID=America/Toronto:20221024T113000
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URL:/combinatorics-and-optimization/events/algebraic-gr
 aph-theory-seminar-guillermo-nunez-ponasso
SUMMARY:Algebraic Graph Theory Seminar - Guillermo Nunez Ponasso
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Hadamard’s Maximal Determinant Problem and
  Generalisations\n\nSpeaker:\n Guillermo Nunez Ponasso\n\nAffiliation:\n W
 orcester Polytechnic Institute\n\nLocation:\n Please contact Sabrina Lato 
 for Zoom link\n\nABSTRACT:  Any matrix $M$ of order $n$ with entries take
 n from the\ncomplex unit disk satisfies Hadamard’s determinantal inequal
 ity\n$|\\det M|\\leq n^{n/2}$. Matrices meeting this bound with equality h
 ave\npairwise orthogonal rows and columns. Such matrices are known as\nHad
 amard matrices\, and character tables of finite abelian groups give\nexamp
 les at every order. \n 
DTSTAMP:20250524T032818Z
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