Results 21 to 30 of about 235,360 (278)

Weak compactness of operators acting on o–O type spaces [PDF]

open access: yes, 2014
We consider operators T : M_0 -> Z and T : M -> Z, where Z is a Banach space and (M_0, M) is a pair of Banach spaces belonging to a general construction in which M is defined by a "big-O" condition and M_0 is given by the corresponding "little-o ...
Bessaga   +7 more
core   +2 more sources

Weighted arithmetic–geometric operator mean inequalities [PDF]

open access: yesJournal of Inequalities and Applications, 2018
In this paper, we refine and generalize some weighted arithmetic-geometric operator mean inequalities due to Lin (Stud. Math. 215:187-194, 2013) and Zhang (Banach J. Math. Anal. 9:166-172, 2015) as follows: Let A and B be positive operators.
openaire   +3 more sources

Invariance in a class of operations related to weighted quasi-geometric means [PDF]

open access: yesFuzzy Sets and Systems, 2021
Let $I\subset (0,\infty )$ be an interval that is closed with respect to the multiplication. The operations $C_{f,g}\colon I^{2}\rightarrow I$ of the form \begin{equation*} C_{f,g}\left( x,y\right) =\left( f\circ g\right) ^{-1}\left( f\left( x\right) \cdot g\left( y\right) \right) \text{,} \end{equation*} where $f,g$ are bijections of $I$ are ...
Jimmy Devillet, Janusz Matkowski
openaire   +4 more sources

Neutrosophic cubic Heronian mean operators with applications in multiple attribute group decision-making using cosine similarity functions

open access: yesInternational Journal of Distributed Sensor Networks, 2019
This article introduces the concept of Heronian mean operators, geometric Heronian mean operators, neutrosophic cubic number–improved generalized weighted Heronian mean operators, neutrosophic cubic number–improved generalized weighted geometric Heronian
Muhammad Gulistan   +5 more
doaj   +1 more source

Compact bilinear commutators: the weighted case [PDF]

open access: yes, 2015
Commutators of bilinear Calderón-Zygmund operators and multiplication by functions in a certain subspace of the space of functions of bounded mean oscillation are shown to be compact on appropriate products of weighted Lebesgue spaces.Simons ...
Benyi, Arpad   +3 more
core   +1 more source

Weighted Bonferroni Aggregation Operators on Complex q-Rung Orthopair 2-Tuple Linguistic Variables With Application to Green Supply Chain Management

open access: yesIEEE Access, 2023
In this paper, we give advanced study in complex q-rung orthopair 2-tuple linguistic variables (CQRO2-TLVs). The major theme of the paper is to evaluate the novel concept of CQRO2-TLVs and their dominant operational laws so that it can be a competent ...
Zeeshan Ali   +2 more
doaj   +1 more source

Generalizations of Weighted Means and OWA Operators by Using Unimodal Weighting Vectors [PDF]

open access: yesIEEE Transactions on Fuzzy Systems, 2020
Weighted means and ordered weighted averaging (OWA) operators are two families of functions well known in the literature. Given that both are specific cases of the Choquet integral, several procedures for constructing capacities that generalize simultaneously those of the weighted means and the OWA operators have been suggested in recent years. In this
openaire   +1 more source

Fredholm theory of Toeplitz operators on standard weighted Fock spaces [PDF]

open access: yes, 2018
We study the Fredholm properties of Toeplitz operators with bounded symbols of vanishing mean oscillation in the complex plane. In particular, we prove that the Toeplitz operator with such a symbol is Fredholm on a standard weighted Fock space if and ...
Al-qabani, Aamena, Virtanen, Jani
core   +1 more source

Operator inequalities and gyrolines of the weighted geometric means [PDF]

open access: yesMathematical Inequalities & Applications, 2021
We consider in this paper two different types of the weighted geometric means of positive definite operators. We show the component-wise bijection of these geometric means and give a geometric property of the spectral geometric mean as a metric midpoint.
openaire   +2 more sources

Generalized Fuzzy Bonferroni Harmonic Mean Operators and Their Applications in Group Decision Making

open access: yesJournal of Applied Mathematics, 2013
The Bonferroni mean (BM) operator is an important aggregation technique which reflects the correlations of aggregated arguments. Based on the BM and harmonic mean operators, H. Sun and M. Sun (2012) developed the fuzzy Bonferroni harmonic mean (FBHM) and
Jin Han Park, Eun Jin Park
doaj   +1 more source

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