trureturingGitHub MATHEMATICAL ATLAS

Combinatorics / CONCEPT

Coarse three-block partition refinements, triangular inversion, and bipartite masked ranks

Refinement counts between two- and three-block finite set partitions invert the upper-sum operator on coarse partitions and double the off-diagonal rank of symmetric binary matrices across bipartitions.

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Stirling identities, k-block partition cardinality, and three-block refinements of a bipartition

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