Tel Aviv University
Hello everyone,
The next colloquium talk will be held on Monday, 11/6/2012, 12:15, Schreiber
006, Tel Aviv University. The speaker is
     Paul Biran (ETH Zurich)
who we all miss and the title of his talk is
     Lagrangian Topology: Geometry, Algebra & Bureaucracy
The abstract is given below. Tea and coffee at 12:00, same room. This
lecture is part of the Blumenthal Lectures in Geometry. Paul is also
speaking on Wednesday at 12.
Hope to see you there. For information about future colloqiua, see
You are all welcome to suggest a colloquium speaker for June 18.
Abstract: Lagrangian submanifolds appear naturally in symplectic geometry
from different angles: real algebraic geometry, dynamics and integrable
systems are just a few sources to mention. In fact, once the concept is
introduced many symplectic phenomena can be rephrased in a Lagrangian
language, as a famous citation of A. Weinstein goes "Everything is
I will survey the development of Lagrangian topology, which is a theory that
mixes topological and symplectic invariants associated to Lagrangian
submanifolds. I will explain how these can be applied to solve various
problems in symplectic geometry. I will then move on to newer developments
that have to do with the algebraic structure of the totality of these
invariants, such as the Donaldson and Fukaya categories. If time permits I
will outline a new and more geometric approach to study these categories.
No a priori knowledge of symplectic geometry is needed.
Technion Math Net-2 (TECHMATH2)
Editor: Michael Cwikel   <> 
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