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Canonical Bases for Permutohedral Plates. (arXiv:1712.08520v1 [math.CO])

来源于:arXiv
We study three finite-dimensional quotient vector spaces constructed from the linear span of the set of characteristic functions of permutohedral cones by imposing two kinds of constraints: (1) neglect characteristic functions of higher codimension permutohedral cones, and (2) neglect characteristic functions of permutohedral cones which contain doubly infinite lines. We construct an ordered basis which is canonical, in the sense that it has subsets which map onto ordered bases for the quotients. 查看全文>>