Results 11 to 20 of about 144 (124)

An Innovative Approach to the Product of k-Hybrid Functional Integral Equation

open access: yesAbstract and Applied Analysis
MSC2020 Classification: 46E30, 45G10, 47H30, 47N20, and ...
A. M. A. El-Sayed, Sh. M. Al-Issa
doaj   +3 more sources

Strongly quasilinear parabolic systems [PDF]

open access: yes, 2023
Using the theory of Young measures, we prove the existence of solutions to a strongly quasilinear parabolic system Mathematics Subject Classification (2010): 35K55, 35D30, 46E30 Received 29 April 2020; Accepted 29 June ...
AZROUL, Elhoussine   +3 more
core   +1 more source

Perturbed eigenvalue problems: an overview [PDF]

open access: yes, 2021
The study of perturbed eigenvalue problems has been a very active field of investigation throughout the years. In this survey we collect several results in the field.
MIHĂILESCU, Mihai   +3 more
core   +1 more source

Triangular ideal relative convergence on modular spaces and Korovkin theorems [PDF]

open access: yes, 2023
In this paper, we introduce the concept of triangular ideal relative convergence for double sequences of functions defined on a modular space. Based upon this new convergence method, we prove Korovkin theorems. Then, we construct an example such that our
ÇINAR, Selin, YILDIZ, Sevda
core   +1 more source

Weighted fractional Hardy operators and their commutators on generalized Morrey spaces over quasi-metric measure spaces [PDF]

open access: yes, 2021
We study commutators of weighted fractional Hardy-type operators within the frameworks of local generalized Morrey spaces over quasi-metric measure spaces for a certain class of “radial” weights.
Samko, Natasha Gabatsuyevna
core   +1 more source

On essential norms of singular integral operators with constant coefficients and of the backward shift [PDF]

open access: yes, 2022
Received by the editors November 5, 2021. 2020 Mathematics Subject Classification. Primary 45E05, 46E30, 47B38. Key words and phrases. Rearrangement-invariant Banach function space, abstract Hardy singular integral operator, backward shift operator, norm,
Karlovych, Oleksiy   +1 more
core   +1 more source

Korovkin type approximation for double sequences via statistical A-summation process on modular spaces [PDF]

open access: yes, 2018
n this work, we introduce the Korovkin type approximation theorems on modular spaces via statistical A-summation process for double sequences of positive linear operators and we construct an example satisfying our new approximation theorem but does not ...
Burçak Kolay   +3 more
core   +1 more source

On the approximation by trigonometric polynomials in weighted Lorentz spaces

open access: yesJournal of Function Spaces, Volume 8, Issue 1, Page 67-86, 2010., 2010
We obtain estimates of structural characteristics of 2π‐periodic functions by the best trigonometric approximations in weighted Lorentz spaces, and show that the order of generalized modulus of smoothness depends not only on the rate of the best approximation, but also on the metric of the spaces.
Vakhtang Kokilashvili   +2 more
wiley   +1 more source

A Korovkin theorem in multivariate modular function spaces

open access: yesJournal of Function Spaces, Volume 7, Issue 2, Page 105-120, 2009., 2009
In this paper a modular version of the classical Korovkin theorem in multivariate modular function spaces is obtained and applications to some multivariate discrete and integral operators, acting in Orlicz spaces, are given.
Carlo Bardaro   +2 more
wiley   +1 more source

Concentration-compactness principle associated with Adams' inequality in Lorentz-Sobolev space

open access: yesAdvanced Nonlinear Studies, 2022
The concentration-compactness principle of Lions type in Euclidean space relies on the Pólya-Szegö inequality, which is not available in non-Euclidean settings.
Li Dongliang, Zhu Maochun
doaj   +1 more source

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