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SUMMARY:Mateusz Michałek (University of Konstanz)
DTSTART:20210624T163000Z
DTEND:20210624T173000Z
DTSTAMP:20260424T095450Z
UID:SFUQNTAG/33
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/SFUQNTAG/33/
 ">Chromatic polynomials of tensors and cohomology of complete forms</a>\nb
 y Mateusz Michałek (University of Konstanz) as part of SFU NT-AG seminar\
 n\n\nAbstract\nThere are two plane quadrics passing through four general p
 oints and tangent to one general line. There are six ways to properly colo
 r vertices of a triangle with three colors. The maximum likelihood functio
 n for a general linear concentration two dimensional model in a four dimen
 sional space has three critical points. Each of these examples of course c
 omes naturally in families.\nIn our talk we will try to explain what the a
 bove numbers mean\, how to compute them and that they are all shadows of t
 he same construction. Our methods are based on the cohomology ring of the 
 so-called variety of complete forms.\nThe talk is based on works with Conn
 er\, Dinu\, Manivel\, Monin\, Seynnaeve\, Wisniewski and Vodicka. These ar
 e on the other hand based on fundamental works due to Huh\, Pragacz\, Stur
 mfels\, Teissier\, Uhler and others (Schubert included).\n
LOCATION:https://researchseminars.org/talk/SFUQNTAG/33/
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