Results 21 to 30 of about 438,174 (168)

Asymptotic lifts of positive linear maps [PDF]

Pacific Journal of Mathematics, 2007
We show that the notion of asymptotic lift generalizes naturally to normal positive maps $ $ acting on von Neumann algebras M. We focus on cases in which the domain of the asymptotic lift can be embedded as an operator subsystem of M, and characterize when that subsystem is a Jordan subalgebra of M in terms of the asymptotic multiplicative properties ...
Arveson, William, Størmer, Erling
openaire   +3 more sources

Some reverse mean inequalities for operators and matrices

Journal of Inequalities and Applications, 2019
In this paper, we present some new reverse arithmetic–geometric mean inequalities for operators and matrices due to Lin (Stud. Math. 215:187–194, 2013).
Chaojun Yang, Yaxin Gao, Fangyan Lu
doaj   +1 more source

Investigation of distinctive physico-chemical soil correlations for Kirkuk city using spatial analysis technique incorporated with statistical modeling

International Journal of Geo-Engineering, 2021
In the sense of challenging economic situation, it is difficult to perform laboratory tests in a whole intended area to define the soil characteristics for whatever task or situation within an entire city.
Aram Mohammed Raheem, Najat Qader Omar
doaj   +1 more source

Some Fixed Point Properties of Self-Maps Constructed by Switched Sets of Primary Self-Maps on Normed Linear Spaces

Fixed Point Theory and Applications, 2010
This paper is devoted to the investigation of the existence of fixed points in a normed linear space X endowed with a norm ‖⋅‖ for self-maps f from T×X to X which are constructed from a given class of so-called primary self ...
M. De la Sen
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Non-linear positive maps between C*-algebras [PDF]

Linear and Multilinear Algebra, 2018
We present some properties of (not necessarily linear) positive maps between $C^*$-algebras. We first extend the notion of Lieb functions to that of Lieb positive maps between $C^*$-algebras. Then we give some basic properties and fundamental inequalities related to such maps. Next, we study $n$-positive maps ($n\geq 2$).
Ali Dadkhah, Mohammad Sal Moslehian
openaire   +2 more sources

Reverses of Ando’s and Hölder–McCarty’s inequalities

Journal of Inequalities and Applications, 2018
In this paper, we give some reverse-types of Ando’s and Hölder–McCarthy’s inequalities for positive linear maps, and positive invertible operators. For this purpose, we use a recently improved Young inequality and its reverse.
Monire Hajmohamadi, Rahmatollah Lashkaripour, Mojtaba Bakherad   +2 more
doaj   +1 more source

Cebyšev’s type inequalities for positive linear maps of selfadjoint operators in Hilbert spaces [PDF]

Mathematica Moravica, 2017
Some inequalities for positive linear maps of continuous synchronous (asynchronous) functions of selfadjoint linear operators in Hilbert spaces, under suitable assumptions for the involved operators, are given.
Sever Silvestru Dragomir
doaj  

Extreme positive linear maps between Jordan Banach algebras [PDF]

Bulletin of the Australian Mathematical Society, 1987
Let A and B be unital JB-algebras. We study the extremal structure of the convex set S (A,B) of all identity preserving positive linear maps from A to B. We show that every unital Jordan homomorphism from A to B is an extreme point of S (A,B). An extreme point of S (A,B) need not be a homomorphism and we show that, given A, every extreme point of S (A ...
Chu, Cho-Ho, Jeffries, Nigel P. H.
openaire   +1 more source

A Grüss inequality for n-positive linear maps

Linear Algebra and its Applications, 2010
Let $\mathscr{A}$ be a unital $C^*$-algebra and let $ : \mathscr{A} \to {\mathbb B}({\mathscr H})$ be a unital $n$-positive linear map between $C^*$-algebras for some $n \geq 3$. We show that $$\| (AB)- (A) (B)\| \leq (A,||\cdot||)\, (B,||\cdot||)$$ for all operators $A, B \in \mathscr{A}$, where $ (C,\|\cdot\|)$ denotes the operator norm ...
Moslehian, Mohammad Sal, Rajić, Rajna
openaire   +4 more sources

Effect of regulatory architecture on broad versus narrow sense heritability. [PDF]

PLoS Computational Biology, 2013
Additive genetic variance (VA ) and total genetic variance (VG ) are core concepts in biomedical, evolutionary and production-biology genetics. What determines the large variation in reported VA /VG ratios from line-cross experiments is not well ...
Yunpeng Wang, Jon Olav Vik, Stig W Omholt, Arne B Gjuvsland   +3 more
doaj   +1 more source