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additivity violation 1entanglement witnesses 1minimum output entropy 1quantum channels 1random projections 1rényi entropy 1

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20242026
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math.AG2026

Border rank=rank for Kruskal tensors and a Kruskal's theorem for skew decompositions

Alexander Taveira Blomenhofer, Benjamin Lovitz

We show that border rank is equal to rank for Kruskal tensors. We also give an analogous Kruskal condition for alternating tensors, which certifies uniqueness of skew rank decompos…