BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//talks.cam.ac.uk//v3//EN
BEGIN:VTIMEZONE
TZID:Europe/London
BEGIN:DAYLIGHT
TZOFFSETFROM:+0000
TZOFFSETTO:+0100
TZNAME:BST
DTSTART:19700329T010000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0100
TZOFFSETTO:+0000
TZNAME:GMT
DTSTART:19701025T020000
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CATEGORIES:Algebra and Representation Theory Seminar
SUMMARY:Bounding cohomology - David Stewart
DTSTART;TZID=Europe/London:20130501T163000
DTEND;TZID=Europe/London:20130501T173000
UID:TALK45011AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/45011
DESCRIPTION:A lot of recent research has sprung out of work on
a conjecture of\nGuralnick: There is a constant c
such that for any finite group G and\nirreducible
\, faithful representation V for G\, the dimension
of H^1(G\,V) is\nless than c. This conjecture red
uces to the case of simple groups. New\ncomputer c
alculations of F. Lübeck and a student of L. Scott
show that it is\nlikely that the conjecture is wr
ong\, but if one fixes either the dimension\nof V
or the Lie rank of G then there do exist bounds. I
n the latter case the\nresults are due to Parshall
--Scott (defining characteristic) and\nGuralnick--
Tiep (cross characteristic). The latter is explici
t and the former has now been made explicit by som
e recent work of A. Parker and\nmyself. There are
many more general results\, however. I'll give an
overview of the area.\n
LOCATION:MR12
CONTACT:Christopher Brookes
END:VEVENT
END:VCALENDAR