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SUMMARY:Graphical Calculus for Twisted Pivotal Categories
DTSTART:20260513T094500Z
DTEND:20260513T104500Z
DTSTAMP:20260509T070800Z
UID:indico-event-16471@indico.math.cnrs.fr
CONTACT:cecile@ihes.fr
DESCRIPTION:Speakers: Benjamin Haïoun (University of Edinburgh)\n\nSeed S
 eminar of Mathematics and Physics\nSpring '26: TQFT and Knot Theory \nGra
 phical calculus provides a convenient way to represent objects and morphis
 ms in a monoidal category using strands in the plane. This viewpoint exten
 ds naturally to more general surfaces and leads to constructions of TQFTs\
 , such as the Turaev–Viro theories. In order to obtain oriented TQFTs\, 
 one usually uses a pivotal structure. In this talk\, I will describe a mor
 e general approach based on a twisted pivotal structure\, as predicted by 
 the cobordism hypothesis. I will introduce a graphical calculus for these 
 structures\, which involves foliated surfaces and many drawings.\nThe zoom
  link is available by subscribing to the mailing list: sympa@listes.math.c
 nrs.fr\nMore information: https://seedseminar.apps.math.cnrs.fr/program/#a
 pril-29-2026\n========\nPour être informé des prochains séminaires vous
  pouvez vous abonner à la liste de diffusion en écrivant un mail à symp
 a@listes.math.cnrs.fr avec comme sujet: "subscribe seminaire_mathematique 
 PRENOM NOM"(indiquez vos propres prénom et nom) et laissez le corps du me
 ssage vide.\n\nhttps://indico.math.cnrs.fr/event/16471/
LOCATION:Centre de conférences Marilyn et James Simons (IHES)
URL:https://indico.math.cnrs.fr/event/16471/
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