Comments on conjectures of trace inequalities on a generalized Wigner-Yanase skew information |
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Authors: | Chul Ki Ko |
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Institution: | Department of Computational Science and Engineering, Yonsei University, 134 Sinchon-dong, Seodaemun-gu, Seoul 120-749, Republic of Korea |
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Abstract: | Furuichi, Yanagi and Kuriyama gave three conjectures of trace inequalities on the Wigner-Yanase-Dyson skew information and a generalized Wigner-Yanase skew information (Furuichi et al. (2009) 1]) and Yanagi found a counterexample showing that two of the three conjectures don't hold (Yanagi (2010) 6]). In this note, we show that the last conjecture does not hold in general. In addition, we show that in the case of 2×2 matrices the conjecture is true. |
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Keywords: | Trace inequality Wigner-Yanase skew information Wigner-Yanase-Dyson skew information Uncertainty relation |
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