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Extensions of the arithmetic–geometric means and Young's norm inequalities to accretive operators, with applications
Linear and Multilinear Algebra ( IF 1.1 ) Pub Date : 2021-03-20 , DOI: 10.1080/03081087.2021.1900049
Danko R. Jocić 1 , Đorđe Krtinić 1 , Milan Lazarević 1
Affiliation  

If A,BB(H) are normal accretive operators, XB(H),0<α<1 and Φ is a s.n. function, we proved that |(A+A)1αX(B+B)α|2Γ(22α)[0,+)etB(B+B)α|AX+XB|2×(B+B)αetBt2α1dt, (A+A)1αX(B+B)αΦΓ(22α)Γ(2α)AX+XBΦ,if AX+XBCΦ(H).Let A,B,XB(H),A0,B0,η,θR,α(0,1) and Φ be a s.n. function. If eiηAX+eiθXBCΦ(H), then we have the following generalization of Young's norm inequality in Jocić [Cauchy–Schwarz norm inequalities for weak*-integrals of operator valued functions. J Funct Anal. 2005;218:318–346], Corollary 4.1 |eiη+eiθ|A1αXBαΦΓ(22α)Γ(2α)eiηAX+eiθXBΦ.Various examples and applications of the obtained norm inequalities are also presented, including those related to the Heinz and Heron means and Zhan inequalities.



中文翻译:

算术几何方法和杨氏范数不等式对增生算子的扩展,及其应用

如果一种,(H)是正常的增生算子,X(H),0<α<1个并且 Φ 是一个 sn 函数,我们证明了|(一种+一种)1个αX(+)α|2个Γ(2个2个α)[0,+)电子(+)α|一种X+X|2个×(+)α电子2个α1个d, (一种+一种)1个αX(+)αΦΓ(2个2个α)Γ(2个α)一种X+XΦ,一世F 一种X+XCΦ(H).一种,,X(H),一种0,0,η,θR,α(0,1个)和 Φ 是一个 sn 函数。如果电子一世η一种X+电子一世θXCΦ(H),然后我们对 Jocić [Cauchy–Schwarz 范数不等式的弱*-算子值函数积分的范数不等式进行了以下推广。J 功能肛门。2005;218:318–346],推论 4.1|电子一世η+电子一世θ|一种1个αXαΦΓ(2个2个α)Γ(2个α)电子一世η一种X+电子一世θXΦ.还介绍了所获得范数不等式的各种示例和应用,包括与海因茨和海伦均值以及詹氏不等式相关的示例和应用。

更新日期:2021-03-20
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