A note on Mustata's computation of multiplier ideals of hyperplane arrangements

Zach Teitler

Published 2006-10-09, updated 2007-03-17Version 2

M. Mustata used jet schemes to compute the multiplier ideals of reduced hyperplane arrangements. We give an alternate proof using a log resolution, which is simpler and allows us to consider non-reduced arrangements. By applying the idea of wonderful models introduced by De Concini--Procesi, we also simplify the result.