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 <http://www.math.tau.ac.il/~klartagb/colloq_2011.html> You are all welcome to suggest a colloquium speaker for June 18. Yours, Bo'az -------------- 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 Lagrangian". 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 <techm@math.technion.ac.il> Announcement from: <klartagb@post.tau.ac.il>