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DTSTART:20210314T070000
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DTSTART;TZID=America/Toronto:20210415T130000
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URL:/combinatorics-and-optimization/events/algebraic-co
 mbinatorics-seminar-yannic-vargas
SUMMARY:Algebraic Combinatorics Seminar - Yannic Vargas
CLASS:PUBLIC
DESCRIPTION:Summary \n\nTITLE: Algebraic structure of the Hopf algebra of 
 double posets\n\nSpeaker:\n Yannic Vargas\n\nAffiliation:\n Potsdam Univer
 sity\n\nZoom:\n Contact Karen Yeats\n\nABSTRACT:\n\nA Hopf algebra of doub
 le posets was introduced by Claudia Malvenuto\nand Christophe Reutenauer i
 n 2011\, motivated by the study of pictures\nof tableaux as defined by Ze
 levinsky. Starting from the correspondence\nbetween top-cones in the braid
  arrangement and partial orders\, we\ninvestigate several properties of t
 he Hopf algebra of double posets\nas the image of a Hopf monoid (via the 
 Fock functor). In particular\,\nwe obtain a non-cancellative formula for t
 he antipode. A description\nof the primitive space is also discussed.\n 
DTSTAMP:20250521T164030Z
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