Sperner's lemma and zero point theorems on a discrete simplex and a discrete simplotope.

Takuya Iimura Kazuo Murota Akihisa Tamura Sperner's lemma and zero point theorems on a discrete simplex and a discrete simplotope. 588-592 2012 160 Discrete Applied Mathematics 4-5 http://dx.doi.org/10.1016/j.dam.2011.11.018 db/journals/dam/dam160.html#IimuraMT12