English

Order complexes of noncomplemented lattices are nonevasive

Combinatorics 2008-02-03 v1

Abstract

We reprove and generalize in a combinatorial way the result of A. Bj\"orner [J.\ Comb.\ Th.\ A {\bf 30}, 1981, pp.~90--100, Theorem 3.3], that order complexes of noncomplemented lattices are contractible, namely by showing that these simplicial complexes are in fact nonevasive, in particular collapsible.

Keywords

Cite

@article{arxiv.math/9704225,
  title  = {Order complexes of noncomplemented lattices are nonevasive},
  author = {Dmitry Kozlov},
  journal= {arXiv preprint arXiv:math/9704225},
  year   = {2008}
}