BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:David Kern (KTH)
DTSTART:20241119T213000Z
DTEND:20241119T230000Z
DTSTAMP:20260422T174306Z
UID:tandg/23
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/tandg/23/">C
 ategorical spectra and ℤ-categories</a>\nby David Kern (KTH) as part of 
 Topology and Geometry Seminar (Texas\, Kansas)\n\n\nAbstract\nCategorical 
 spectra\, developed by Stefanich\, are a directed version of\nspectra wher
 e the suspension of pointed ∞-groupoids is replaced by that\nof pointed 
 ω-categories. They are very useful for capturing stability\nphenomena in 
 iterated categorifications\, or for defining “∞-vector\nspaces”. In 
 this talk\, I will explain that they can be understood as a\nweak version 
 of Lessard's ℤ-categories\, a kind of category with arrows\nin all negat
 ive as well as positive dimensions\, which allows for a more\ndirect study
  of their structure.\n
LOCATION:https://researchseminars.org/talk/tandg/23/
END:VEVENT
END:VCALENDAR