In this paper we construct from a cographic matroid M, a pure multicomplex whose degree sequence is the h―vector of the the matroid complex of M. This result provesa conjecture of Richard Stanley [Sta96] in the particular case of cographic matroids. We also prove that the multicomplexes constructed are M―shellable, so proving a conjecture of Manoj Chari [Cha97] again in the case of cographic matroids. The proofs use results on a game for graphs called the chip firing game.
Juan Migliore;Uwe Nagel;Fabrizio Zanello, Springer eBooks, Pure O-Sequences: Known Results, Applications, and Open Problems, pp. 527-550, 2012, 10.1007/978-1-4614-5292-8_16.
M. E. Messinger;R. J. Nowakowski;P. Praat, 2008, Cleaning a network with brushes, Theoretical Computer Science, 399, 3, pp. 191-205, 10.1016/j.tcs.2008.02.037.