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math.AC2012★ 3 cited
Chain polytopes and algebras with straightening laws
Takayuki Hibi, Nan Li
It will be shown that the toric ring of the chain polytope of a finite partially ordered set is an algebra with straightening laws on a finite distributive lattice. Thus in particu…
math.AC2011★ 8 cited
External zonotopal algebra
Nan Li, Amos Ron
We provide a general, unified, framework for external zonotopal algebra. The approach is critically based on employing simultaneously the two dual algebraic constructs and invokes…