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arXiv · 1408.2707

A note on extremal decomposition of covariances

Zoltan Leka
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Abstract

We shall present an elementary approach to extremal decompositions of (quantum) covariance matrices determined by densities. We give a new proof on former results and provide a sharp estimate of the ranks of the densities that appear in the decomposition theorem.

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Zoltan Leka. 2014-08-12. A note on extremal decomposition of covariances. https://arxiv.org/abs/1408.2707

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