Ludwig Schläfli lecture 2018
Monday November 19th, 2018, 17:15 University of Bern, Main Building, Hochschulstrasse 4, Room 120 (first floor, on the West side). Coffee and tea starts at 16:30, ground floor of Main building, on the West side. 

Tamar Ziegler Einstein Institute of Mathematics The Hebrew University of Jerusalem 

Approximate cohomology: from dynamics to algebraic geometry
Say that a function f from an abelian group G to
Hom(V,W) is an approximate homomorphism if
f(x+y)f(x)f(y) is of bounded rank uniformly for
all x,y in G. Is there a homomorphism
h such that (fh)(x) is of bounded rank for all
x in G ? We demonstrate how this question is naturally related to questions in arithmetic combinatorics, dynamics and algebraic geometry. 

The Ludwig Schläfli lecture takes place every two years
since 2006 (in even years) at the University of Bern; it is a
joint colloquium with the University of Fribourg, who organizes
the Plancherel Lectures in odd years.
The lecture is named after Ludwig
Schläfli, who was a member of the mathematics department of the
University of Bern between 1848 and 1891. This year, there is a special exhibition
about his life and works.
The Schläfli lecture is an excellent opportunity
for mathematicians from Swiss universities to meet and
learn about new directions of research in mathematics.


 
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