Woensdag 24 november 2004
Spreker: 
Eric Edo (New Caledonia)

Titel: 
Zariski topology and polydegree

Tijd: 
11:00  12:00

Plaats: 
CK N4 (N3045)

Vanaf half 11 is er koffie en chocola in de Weylkamer
(N2046).
Abstract
The group
G of automorphisms of the
kalgebra
k[x,y] (
k is a field) can be endowed with the structure of an
infinitedimensional algebraic variety and attached Zariski
topology. Furthermore, using the structure of amalgamated product
of
G, one can define the polydegree of an element of
G. We
describe some unexpected relations between the Zariski topology of
G and the polydegree.
(This is joint work with J.P. Furter.)