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CATEGORIES:Algebra seminar
SUMMARY:Dessins d'enfants and finite groups - George Shaba
t\, Moscow University
DTSTART:20160517T150000Z
DTEND:20160517T160000Z
UID:TALK2498AT
URL:/talk/index/2498
DESCRIPTION:The theory of dessins d'enfants is based on the eq
uivalence of a certain combinatorial-topological c
ategory (of graphs on compact oriented surfaces) a
nd an arithmetico-geometric one (of algebraic curv
es over number fields together with special ration
al functions on them). The objects of both categor
ies admit a group-theoretic description as well.\n
\nThe talk will start with a brief introduction to
the theory. After that the group-theoretic aspect
s of it will be discussed\, basically related to a
certain graphic images of 2-generated groups and
to the Inverse Galois Problem. Some examples will
be presented and the lines of research suggested.
LOCATION:Watson Building\, Lecture Room B
CONTACT:David Craven
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