Results 11 to 20 of about 1,164 (138)
On strong orthogonality and strictly convex normed linear spaces [PDF]
Journal of Inequalities and Applications, 2012 We introduce the notion of strongly orthogonal set relative to an element in the sense of Birkhoff-James in a normed linear space to find a necessary and sufficient condition for an element $ x $ of the unit sphere $ S_{X}$ to be an exposed point of the ...
Jha, Kanhaiya +2 more
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Further refinements of some numerical radius inequalities for operators
Operators and Matrices, 2023 . In this work, we give re fi nements of some well-known numerical radius inequalities. Also, we present an improvement of the triangle inequality for the operator norm. Mathematics subject classi fi cation (2020): 47A12, 47A30, 47B15.
Soumia Soltani, Abdelkader Frakis
semanticscholar +1 more source
Conserved Quantities of a Nonlinear Coupled System of Korteweg-De Vries Equations
INTERNATIONAL JOURNAL OF MATHEMATICS AND COMPUTER RESEARCH, 2022 The conserved vectors from a system of coupled Kortewegde Vries equations that have modelled the propagation of shallow water waves, ion-acoustic waves in plasmas, solitons, and nonlinear perturbations along internal surfaces between layers of different ...
Joseph E Owuor
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Journal of Mathematical Inequalities, 2021 Convex functions have played a major role in the field of Mathematical inequalities. In this paper, we introduce a new concept related to convexity, which proves better estimates when the function is somehow more convex than another.
M. Sababheh, S. Furuichi, H. Moradi
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A Chain of numerical radius inequalities in complex Hilbert space
Journal of Mathematical Inequalities, 2021 In this paper, we implement the improvement of numerical radius inequalities that were produced by Alomari MW. [Refinements of some numerical radius inequalities for Hilbert space operators. Linear and Multilinear Algebra.
Mohammed Al-Dolat +2 more
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Coupled Anti Q-Fuzzy Subgroups using t-Conorms
, 2021 In this paper we study coupled anti Q-fuzzy subgroups of G with respect to t-conorm C. We also discuss the union, normal and direct product of them. Moreover, the homomorphic image and pre-image of them is investigated under group homomorphisms and anti ...
C. Ampadu
semanticscholar +1 more source
Cauchy-Schwarz type inequalities and applications to numerical radius inequalities
, 2020 We present new improvements of certain Cauchy–Schwarz type inequalities. As applications of the results obtained, we provide refinements of some numerical radius inequalities for Hilbert space operators. It is shown, among other inequalities, that if A ∈
F. Kittaneh, H. Moradi
semanticscholar +1 more source
Refinements of numerical radius inequalities using the Kantorovich ratio
Concrete Operators, 2022 In this paper, we improve some numerical radius inequalities for Hilbert space operators under suitable condition. We also compare our results with some known results. As application of our result, we obtain an operator inequality.
Nikzat Elham, Omidvar Mohsen Erfanian
doaj +1 more source
On a decomposition lemma for positive semi-definite block-matrices [PDF]
, 2012 This short note, in part of expository nature, points out several new or recent consequences of a quite nice decomposition for positive semi-definite ...
Bourin, Jean-Christophe +2 more
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Endpoint estimates for homogeneous Littlewood‐Paley g‐functions with non‐doubling measures
Journal of Function Spaces, Volume 7, Issue 2, Page 187-207, 2009., 2009 Let µ be a nonnegative Radon measure on ℝd which satisfies the growth condition that there exist constants C0 > 0 and n ∈ (0, d] such that for all x ∈ ℝd and r > 0, μ(B(x, r)) ≤ C0rn, where B(x, r) is the open ball centered at x and having radius r .
Dachun Yang, Dongyong Yang, Hans Triebel
wiley +1 more source