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3 votes
1 answer
131 views

A graph $G$ with two $K_6$ subgraphs, in which any one-factor of $G$ induces a one-factor in exactly one of the $K_6$ subgraphs?

I'm seeking a simple graph $G$ of the following type: It contains two disjoint copies of $K_6$ (the complete graph on 6 nodes), $H$ and $H'$ say. Any one-factor of $G$ must contain either (a) a one ...
7 votes
2 answers
186 views

Do successive maximum permutations pick latin squares uniformly?

Suppose we start with a $n\times n$ matrix with entries sampled independently and uniformly at random from $[0,1]$. The weight of a set of entries will simply be the sum of those entries. A ...