Andrew McLennan Rabee Tourky
J. Math. Econom., 44(7-8):807-821, 2008.
Publication year: 2008

We introduce a combinatorial abstraction of two person finite games in an oriented matroid. We also define a combinatorial version of Nash equilibrium and prove that an odd number of equilibria exists. The proof is a purely combinatorial rendition of the Lemke–Howson algorithm.