4.6 Article

Roofs and Convexity

Journal

ENTROPY
Volume 12, Issue 7, Pages 1799-1832

Publisher

MDPI
DOI: 10.3390/e12071799

Keywords

roofs; convex roof extensions; entanglement measures

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Convex roof extensions are widely used to create entanglement measures in quantum information theory. The aim of the article is to present some tools which could be helpful for their treatment. Sections 2 and 3 introduce into the subject. It follows descriptions of the Wootters' method, of the subtraction procedure, and examples on how to use symmetries.

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