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SUMMARY:Rigidity and Flexibility for Handlebody Groups - Sebastian Hensel\
 , Bonn
DTSTART:20170301T160000Z
DTEND:20170301T170000Z
UID:TALK69232@talks.cam.ac.uk
CONTACT:Ivan Smith
DESCRIPTION:The handlebody group is the subgroup of the mapping class grou
 p\nof a surface formed by those mapping classes which extend to a handlebo
 dy.\nWe will study rigidity phenomena of this group as a subgroup of the\n
 mapping class group. On the one hand\, the group is rigid: any inclusion\n
 (of a finite index subgroup of) the genus g handlebody group in the genus\
 ng mapping class group is simply a conjugation. On the other hand\, once\n
 we consider inclusions in other mapping class groups\, rigidity ceases to\
 nhold.
LOCATION:MR13
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