BEGIN:VCALENDAR
VERSION:2.0
PRODID:researchseminars.org
CALSCALE:GREGORIAN
X-WR-CALNAME:researchseminars.org
BEGIN:VEVENT
SUMMARY:Naomi Sweeting (Harvard)
DTSTART:20210226T180000Z
DTEND:20210226T193000Z
DTSTAMP:20260422T220543Z
UID:STAGE/22
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/STAGE/22/">C
 rystalline cohomology</a>\nby Naomi Sweeting (Harvard) as part of STAGE\n\
 n\nAbstract\nThis talk will provide an overview of key concepts in crystal
 line cohomology.  We will begin with Grothendieck's heuristic argument tha
 t\, because de Rham cohomology is independent of choice of smooth lift\, a
 n intrinsic characteristic zero-valued cohomology should exist for schemes
  in characteristic p.   We will then discuss divided power structures and 
 the crystalline site.  After stating the key theorems\, we will describe a
  relative setup in which the general theory of topoi plays a more prominen
 t role.  We will conclude with sketches of crucial ideas in the comparison
  isomorphisms\, and a glimpse of the relationship between crystals and con
 nections.\n
LOCATION:https://researchseminars.org/talk/STAGE/22/
END:VEVENT
END:VCALENDAR