A satellite of the grand Furuta inequality and its application

被引:1
|
作者
Fujii, Masatoshi [1 ]
Nakamoto, Ritsuo
Yonezawa, Keisuke [1 ]
机构
[1] Osaka Kyoiku Univ, Dept Math, Kashiwara, Osaka 5828582, Japan
关键词
Positive operators; Operator mean; Ando-Hiai inequality; Furuta inequality and grand Furuta inequality; MEAN THEORETIC APPROACH; EXTENSION;
D O I
10.1016/j.laa.2011.03.049
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
The grand Furuta inequality has the following satellite (SGF:t is an element of [0, 1]), given as a mean theoretic expression: A >= B > 0, t is an element of [0, 1] double right arrow A(-r+t)#(1-t+t/(p-t)s+r)(A(t)#sB(p)) <= B (p t)s+r for r >= t; p,s >= 1, where #(alpha), is the alpha-geometric mean and Lis (s is not an element of [0, 1]) is a formal extension of It,. It is shown that (SGF; t is an element of [0, 1]) has the Lowner-Heinz property, i.e. (SGF; t = 1) implies (SGF;t) for every t is an element of [0, 1]. Furthermore, we show that a recent further extension of (GFI) by Furuta himself has also the Lowner-Heinz property. (C) 2011 Elsevier Inc. All rights reserved.
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页码:1580 / 1586
页数:7
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