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Admissible deformations of free divisors

Le : 02/03/2012 14h00
Par : Michele TORIELLI (Warwick)
Lieu : I 001
Lien web :
Résumé : During this talk we will recall the notion of free and linear free divisors. We will introduce the notion of admissible deformation for a germ of a free divisor and the one of linearly admissible deformation for a germ of a linear free divisors. Moreover, we will show ho to use the de Rham logarithmic complex in order to compute the space of infinitesimal admissible deformations and how to use the Lie algebra cohomology complex to compute the space of infinitesimal linearly admissible deformations. Finally, we will show that every reductive linear free divisor is formally rigid.