Results 21 to 30 of about 1,171 (115)

Multiplicative inequalities for weighted arithmetic and harmonic operator means

open access: yesActa Universitatis Sapientiae: Mathematica, 2019
In this paper we establish some multiplicative inequalities for weighted arithmetic and harmonic operator means under various assumption for the positive invertible operators A, B.
Dragomir Sever S.
doaj   +1 more source

Structure of the antieigenvectors of a strictly accretive operator

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 21, Issue 4, Page 761-766, 1998., 1997
A necessary and sufficient condition that a vector f is an antieigenvector of a strictly accretive operator A is obtained. The structure of antieigenvectors of selfadjoint and certain class of normal operators is also found in terms of eigenvectors. The Kantorovich inequality for selfadjoint operators and the Davis′s inequality for normal operators are
K. C. Das, M. Das Gupta, K. Paul
wiley   +1 more source

Trace inequalities of Shisha-Mond type for operators in Hilbert spaces

open access: yesConcrete Operators, 2017
Some trace inequalities of Shisha-Mond type for operators in Hilbert spaces are provided. Applications in connection to Grüss inequality and for convex functions of selfadjoint operators are also given.
Dragomir Sever Silvestru
doaj   +1 more source

Trace inequalities on a generalized Wigner-Yanase skew information [PDF]

open access: yes, 2009
We introduce a generalized Wigner-Yanase skew information and then derive the trace inequality related to the uncertainty relation. This inequality is a non-trivial generalization of the uncertainty relation derived by S.Luo for the quantum uncertainty ...
Furuichi, S., Kuriyama, K., Yanagi, K.
core   +2 more sources

On further refinements for Young inequalities

open access: yesOpen Mathematics, 2018
In this paper sharp results on operator Young’s inequality are obtained. We first obtain sharp multiplicative refinements and reverses for the operator Young’s inequality.
Furuichi Shigeru, Moradi Hamid Reza
doaj   +1 more source

On trace inequalities and their applications to noncommutative communication theory [PDF]

open access: yes, 2004
Certain trace inequalities related to matrix logarithm are shown. These results enable us to give a partial answer of the open problem conjectured by A.S.Holevo. That is, concavity of the auxiliary function which appears in the random coding exponent
Furuichi, Shigeru   +2 more
core   +4 more sources

Classification of Noncommutative Domain Algebras [PDF]

open access: yes, 2012
Noncommutative domain algebras are noncommutative analogues of the algebras of holomorphic functions on domains of $\C^n$ defined by holomorphic polynomials, and they generalize the noncommutative Hardy algebras. We present here a complete classification
Arias, Alvaro, Latremoliere, Frederic
core   +4 more sources

Generalized Shannon inequalities based on Tsallis relative operator entropy [PDF]

open access: yes, 2005
Tsallis relative operator entropy is defined and then its properties are given. Shannon inequality and its reverse one in Hilbert space operators derived by T.Furuta \cite{Fu:par} are extended in terms of the parameter of the Tsallis relative operator ...
Furuichi, Shigeru   +2 more
core   +2 more sources

Improved Jensen's inequality

open access: yes, 2017
In this article we present refinements of Jensen’s inequality and its reversal for convex functions, by adding as many refining terms as we wish. Then as a standard application, we present several refinements and reverses of well known mean inequalities.
Mohammad Sababheh
semanticscholar   +1 more source

Hardy-Hilbert's inequality and power inequalities for Berezin numbers of operators

open access: yes, 2016
We give operator analogues of some classical inequalities, including Hardy and HardyHilbert type inequalities for numbers. We apply these operator forms of such inequalities for proving some power inequalities for the so-called Berezin number of self ...
M. Garayev, M. Gürdal, Arzu Okudan
semanticscholar   +1 more source

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