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1. CJM 2010 (vol 62 pp. 1228)
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Valuations for Matroid Polytope Subdivisions
We prove that the ranks of the subsets and the activities of the bases
of a matroid define valuations for the subdivisions of a matroid
polytope into smaller matroid polytopes.
Categories:05B35, 52B40, 52B45, 52C22 |