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math.CO2016
A bijective proof of the Cauchy identity for Grothendieck polynomials
Yasuhide Numata
We consider pairs of a set-valued column-strict tableau and a reverse plane partition of the same shape. We introduce algortithms for them, which implies a bijective proof for the…
math.CO2016★ 3 cited
Construction of schemoids from posets
Yasuhide Numata
A schemoid is a generalization of association schemes from the point of view of small categories. In this article, we discuss schemoid structures for two kinds of small categories;…