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SUMMARY:On the behavior of stringy motives under Galois quasi-étale cover
 s
DTSTART:20210518T133000
DTEND:20210518T150000
DTSTAMP:20260916T045159Z
UID:dbcafe4b900d26401afb6f37535b502bf2229d1f9770868f313ddb1e
CATEGORIES:Conferences - Seminars
DESCRIPTION:Javier Carvajal Rojas\nTo a log-terminal singularity\, we may 
 attach a stringy motive.  I will explain the strict descent of such strin
 gy motives under ramified Galois quasi-étale covers in between log-termin
 al singularities of dimension at most 3. The comparison between stringy mo
 tives is done via their Poincaré realizations. Such strict descent reduc
 es the problem regarding the finiteness of the local étale fundamental gr
 oup of log terminal singularities to a descending chain condition (DCC) fo
 r stringy motives. I will show such DCC to hold in dimension 2. In partic
 ular\, I will give a characteristic-free proof for the finiteness of the l
 ocal étale fundamental group of log-terminal surface singularities\, whic
 h was open in characteristics 2 and 3. This is all joint work with Takehi
 ko Yasuda from Osaka University.
LOCATION:https://epfl.zoom.us/j/83413323881?pwd=V0ZHRS93RjdZWDVEYmxVUmlOMW
 FMUT09
STATUS:CONFIRMED
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