On the free arrangements and truncated affine Weyl arrangements

Masahiko Yoshinaga (吉永正彦)

Department of Mathematics, Kyoto University, Kyoto, Japan.

Department of Mathematics, Kyoto University, Kyoto, Japan.

2010/10/26

*Tue*4PM-5PM (Room 3433)Freeness of a hyperplane arrangement is defined algebraically using module of derivations. I will discuss freeness of certain truncated affine Weyl arrangements, called the extended Catalan/Shi arrangements. I will also talk some enumerative corollaries.

Tags: MasahikoYoshinaga