Heinz均值凸性的一个注记

摘要

Recently,KITTANEH obtained an improvement of the Heinz inequality for all unitarily invariant norms.In this note,we obtain a refinement of KITTANEH's result.We shall conclude this paper with some numerical examples.%最近,对于任何的酉不变范数,KITTANEH得到了Heinz不等式的一个改进.在这篇注记中,得到了KITTANEH结果的一个改进.