# Seminar of Algebra

### Free but non-recursively free line arrangements

Speaker:
Hiraku Kawanoue (Research Institute for Mathematical Sciences, Kyoto University, JAPAN)
Email:
kawanoue@kurims.kyoto-u.ac.jp
Location:
Departamento de Álgebra
Date:
Thu, 24 sep 2015 13:00
Hiraku Kawanoue is Assistant Professor at the University of Kyoto. He is interested in Algebraic Geometry, Resolution of singularities and Hyperplane arrangements.

A hyperplane arrangement is a finite set of hyperplanes in a projective or affine space. I will explain the notion of freeness of a hyperplane arrangement and related properties.
After that, I will talk our recent result concerning the freeness of line arrangement, which classifies the freeness of arrangements of few (up to 12) lines in a projective plane.

(This talk is partially supported by projects MTM2013-40455P and FQM333.)