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Counter-examples of the trace inequalities related to the auxiliary function of the quantum reliability function

Shigeru Furuichi, Kenjiro Yanagi

Published Jan 1, 2006• 0 citations
OpenAlex

Abstract

We study the open problem given by Holevo and Ogawa-Nagaoka on the concavity of the auxiliary function of the quantum reliability function. Firstly we review the previous results on this problem in the case that the parameter s is positive. Secondly we consider the problem in the case that the parameter s is negative.

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