Mathematics Seminar, Friday 22 July

[math]

MATHEMATICS SEMINARS - 2011


Friday, 22 July, at 14:30 hrs

Dr. Lev Birbrair
(Universidade Federal do Ceara', Fortaleza, Brazil)


"Metric Geometry and Topology of Complex Surface Singularities"

Abstract

I am going to describe a decomposition of a germ of a complex algebraic 
surface near an isolated singular point, such that this decomposition 
gives a complete invariant of this germ with respect to local 
bi-Lipschitz homeomorphisms.  This decomposition  is related to JSJ 
Decomposition of the link of this singularity, considered as a smooth 
3-manifold.  The construction uses the carousel decomposition of 
neighborhoods of complex algebraic curves, constructed by Le Dung Trang. 
  It is a joint work with Walter Neumann and Anne Pichon.

Venue: Luigi Stasi Seminar Room, ICTP Leonardo Building, first floor.