Results 11 to 20 of about 42,265 (216)

Multiplicative inequalities for weighted arithmetic and harmonic operator means [PDF]

open access: yesActa Universitatis Sapientiae, Mathematica, 2019
Abstract 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. Some applications when A, B are bounded above and below by positive constants are given as well.
openaire   +4 more sources

Fixed points of functions with max-weighted quasi-arithmetic mean operator

open access: yesLinear Algebra and its Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wen, Ching-Feng   +2 more
openaire   +1 more source

Maps Preserving Norms of Generalized Weighted Quasi-arithmetic Means of Invertible Positive Operators

open access: yesThe Electronic Journal of Linear Algebra, 2019
In this paper, the problem of describing the structure of transformations leaving norms of generalized weighted quasi-arithmetic means of invertible positive operators invariant is discussed. In a former result of the authors, this problem was solved for weighted quasi-arithmetic means, and here the corresponding result is generalized by establishing ...
Nagy, Gergő, Szokol, Patrícia
openaire   +4 more sources

On a New Class of Meromorphic Multivalent Functions Defined by Fractional Differ-integral Operator

open access: yesJournal of Kufa for Mathematics and Computer, 2018
In this work, we submite and study a newlclass of meromorphiccmultivalent functions defined by fractional differ-integral operator . We gain some geometric properties , such as, coefficient inequality, growth and distortion bounds, convolution properties,
Waggas Galib Atshan   +1 more
doaj   +1 more source

Operator means of probability measures and generalized Karcher equations [PDF]

open access: yes, 2016
In this article we consider means of positive bounded linear operators on a Hilbert space. We present a complete theory that provides a framework which extends the theory of the Karcher mean, its approximating matrix power means, and a large part of Kubo-
Pálfia, Miklós
core   +2 more sources

A converse inequality of higher order weighted arithmetic and geometric means of positive definite operators

open access: yesLinear Algebra and its Applications, 2007
\textit{T.\,Ando, C.\,K.\thinspace Li} and \textit{R.\,Mathias} defined a geometric mean for \(n\)-positive definite operators in [Linear Algebra Appl.\ 385, 305--334 (2004; Zbl 1063.47013)]. The geometric mean which they discussed has many good properties and hence became subject of a sizable amount of subsequent research.
Kim, Sejong, Lim, Yongdo
openaire   +2 more sources

Quasi-arithmetic means and OWA functions in interval-valued and Atanassov's intuitionistic fuzzy set theory [PDF]

open access: yes, 2011
In this paper we propose an extension of the well-known OWA functions introduced by Yager to interval-valued (IVFS) and Atanassov’s intuitionistic (AIFS) fuzzy set theory.
Deschrijver, Glad
core   +2 more sources

Constraint-wish and satisfied-dissatisfied: an overview of two approaches for dealing with bipolar querying [PDF]

open access: yes, 2013
In recent years, there has been an increasing interest in dealing with user preferences in flexible database querying, expressing both positive and negative information in a heterogeneous way.
De Tré, Guy   +3 more
core   +2 more sources

The Generalized Hybrid Averaging Operator and its Application in Decision Making // La media generalizada híbrida y su aplicación en la toma de decisiones [PDF]

open access: yesRevista de Métodos Cuantitativos para la Economía y la Empresa, 2010
We present the generalized hybrid averaging (GHA) operator. It is a new aggregation operator that generalizes the hybrid averaging (HA) operator by using the generalized mean. Thus, we are able to generalize a wide range of mean operators such as the HA,
Casanovas Ramón, Montserrat   +1 more
doaj  

Classical and Quantum Complexity of the Sturm-Liouville Eigenvalue Problem [PDF]

open access: yes, 2005
We study the approximation of the smallest eigenvalue of a Sturm-Liouville problem in the classical and quantum settings. We consider a univariate Sturm-Liouville eigenvalue problem with a nonnegative function $q$ from the class $C^2([0,1])$ and study ...
Papageorgiou, A., Wozniakowski, H.
core   +3 more sources

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