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Results tagged with co.combinatorics
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user 21335
Enumerative combinatorics, graph theory, order theory, posets, matroids, designs and other discrete structures. It also includes algebraic, analytic and probabilistic combinatorics.
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answer
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Generalized silver matrix (related to defining number)
Let $S=\{1,2,\dots,m+n-1\}$.
An $m\times n$ matrix($\in S^{m\times n}$) is called silver matrix if
(a) There is no same numbers in the row or column. (like latin square)
(b) {$i$ th row}$\cup${$i$ …
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