%0 Journal Article
%T Not all free arrangements are $K(¦Ð,1)$
%A Paul H. Edelman
%A Victor Reiner
%J Mathematics
%D 1995
%I arXiv
%X We produce a one-parameter family of hyperplane arrangements that are counterexamples to the conjecture of Saito that the complexified complement of a free arrangement is $K(\pi,1)$. These arrangements are the restriction of a one-parameter family of arrangements that arose in the study of tilings of certain centrally symmetric octagons. This other family is discussed as well.
%U http://arxiv.org/abs/math/9501229v1