From: BrendaSueCook (brenda@math.missouri.edu)
Date: Mon Apr 30 2007 - 08:47:50 CDT
Colloquium
Department of Mathematics
Bernard Teissier
University of Paris
Limits of tangent spaces on singular spaces
Abstract: Given a singular point x of a complex analytic set X, the set
of limiting positions of the tangent spaces at non singular points of X
tending to x is a natural invariant of the geometry of the germ (X,x),
much richer than the tangent cone. It is a projective algebraic variety
and I will explain how one can compute it, at least in principle, from
local equations of X. I will also present a part of its role in the
classification of singularities, and if time permits discuss its
connexion with resolution of singularities.
Friday, May 4
3:30 p.m.
105 General Classroom Building
Refreshments will be served at 3:00 p.m.
in Room 326 Mathematical Sciences (Math Lounge).
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