# Jerusalem Mathematics Colloquium

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Thursday, 5th December 2002, 4:00 pm

Mathematics Building, Lecture Hall 2

##

Florian Deloup

(Toulouse/HU)

Quadratic functions, Spin structures and low-dimensional topology

** Abstract: **
Ever since the beginning of algebraic topology, quadratic
forms have played a prominent rôle. For instance, on surfaces, there
is a very nice interpretation of quadratic forms as spin structures.

There is a new analog in dimension three:
*complex* spin structures *embed* into the space of quadratic
functions over the linking pairing. Consequences
and connections with invariants of 3-manifolds will be also be discussed.

Light refreshments will be served in the faculty lounge at 3:30.

List of talks, 2002-03

List of talks, 2001-02

List of talks, 2000-01

List of talks, 1998-99

List of talks, 1997-98