Discrete Mathematics, 307 (2007) 274-279.
On the topology of free complexes of convex geometries.
by Masahiro Hachimori and Kenji Kashiwabara
Abstract
We investigate the free complex of a convex geometry.
Edelman and Reiner showed that the free complex of a convex geometry
is contractible. Moreover, their paper stated a conjecture about the topoloty
of free complexes. This paper proves their conjecture.