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arxiv: 1707.03928 · v1 · pith:VISVBLPLnew · submitted 2017-07-12 · 🧮 math.CO · cs.DM

A note on X-rays of permutations and a problem of Brualdi and Fritscher

classification 🧮 math.CO cs.DM
keywords x-raysbijectionbrualdiconjecturefritschernotepermutationsproblem
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The subject of this note is a challenging conjecture about X-rays of permutations which is a special case of a conjecture regarding Skolem sequences. In relation to this, Brualdi and Fritscher [Linear Algebra and its Applications, 2014] posed the following problem: Determine a bijection between extremal Skolem sets and binary Hankel X-rays of permutation matrices. We give such a bijection, along with some related observations.

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