BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Walker Stern (Technical University of Munich)
DTSTART:20260318T080000Z
DTEND:20260318T093000Z
DTSTAMP:20260422T161057Z
UID:HKUST-AG/88
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/HKUST-AG/88/
 ">More about spans than you ever wanted to know</a>\nby Walker Stern (Tech
 nical University of Munich) as part of Algebra and Geometry Seminar @ HKUS
 T\n\nLecture held in Room 3598 (Lift 27/28).\n\nAbstract\nHigher categorie
 s of spans\, also called correspondences\, play a key role in many algebra
 ic and algebro-geometric constructions --- from six functor formalisms to 
 the constructions of Hall algebras. In this talk\, I will describe the fun
 damental categorical structures which underpin ongoing research (joint wit
 h Jonte Gödicke\, Quoc Ho\, and Yang Hu) aimed at constructing braided mo
 noidal categories using higher categories of spans. In particular\, I will
  explain a new approach to $(\\infty\,n)$-categories of spans and deduce f
 rom it a new universal property which allows us to construct the $E_2$ (br
 aided) algebras described in last week's talk by Jonte Gödicke.\n
LOCATION:https://researchseminars.org/talk/HKUST-AG/88/
END:VEVENT
END:VCALENDAR