Results 11 to 20 of about 1,317,588 (284)

Approximation of functions by a class of Durrmeyer–Stancu type operators which includes Euler’s beta function

open access: yesAdvances in Difference Equations, 2021
In this work, we construct the genuine Durrmeyer–Stancu type operators depending on parameter α in [ 0 , 1 ] $[0,1]$ as well as ρ > 0 $\rho >0$ and study some useful basic properties of the operators.
Abdullah Alotaibi   +3 more
doaj   +1 more source

Dunkl-type generalization of the second kind beta operators via ( p , q ) $(p,q)$ -calculus

open access: yesJournal of Inequalities and Applications, 2021
The main purpose of this research article is to construct a Dunkl extension of ( p , q ) $(p,q)$ -variant of Szász–Beta operators of the second kind by applying a new parameter.
Md. Nasiruzzaman   +2 more
doaj   +1 more source

Existence of Solutions for Nonlinear Integral Equations in Tempered Sequence Spaces via Generalized Darbo-Type Theorem

open access: yesJournal of Function Spaces, 2022
Two concepts—one of Darbo-type theorem and the other of Banach sequence spaces—play a very important and active role in ongoing research on existence problems.
S. A. Mohiuddine   +2 more
doaj   +1 more source

Complexity theory for operators in analysis [PDF]

open access: yesProceedings of the forty-second ACM symposium on Theory of computing, 2010
We propose an extension of the framework for discussing the computational complexity of problems involving uncountably many objects, such as real numbers, sets and functions, that can be represented only through approximation. The key idea is to use a certain class of string functions as names representing these objects.
Akitoshi Kawamura, Stephen A. Cook
openaire   +3 more sources

Approximation of GBS Type q-Jakimovski-Leviatan-Beta Integral Operators in Bögel Space

open access: yesMathematics, 2022
In the present article, we introduce the bivariate variant of Beta integral type operators based on Appell polynomials via q-calculus. We study the local and global type approximation properties for these new operators.
Abdullah Alotaibi
doaj   +1 more source

Solvability of second order linear differential equations in the sequence space n(ϕ) $n(\phi)$

open access: yesAdvances in Difference Equations, 2018
We apply the concept of measure of noncompactness to study the existence of solution of second order differential equations with initial conditions in the sequence space n(ϕ) $n(\phi)$.
Abdullah Alotaibi   +2 more
doaj   +1 more source

On the Approximation by Bivariate Szász–Jakimovski–Leviatan-Type Operators of Unbounded Sequences of Positive Numbers

open access: yesMathematics, 2023
In this paper, we construct the bivariate Szász–Jakimovski–Leviatan-type operators in Dunkl form using the unbounded sequences αn, βm and ξm of positive numbers.
Abdullah Alotaibi
doaj   +1 more source

Operations in A-theory

open access: yesJournal of Pure and Applied Algebra, 2002
This paper gives a construction for Segal operations in the \(K\)-theory of categories with cofibrations, weak equivalences and a biexact pairing. The construction extends work of Grayson on exact categories. In particular the construction produces operations in the algebraic \(K\)-theory of spaces (\(A\)-theory); these are shown to be the operations ...
Gunnarsson, Thomas, Schwänzl, Roland
openaire   +2 more sources

Resonance Theory for Schrödinger Operators [PDF]

open access: yesCommunications in Mathematical Physics, 2001
Resonances which result from perturbation of embedded eigenvalues are studied by time dependent methods. A general theory is developed, with new and weaker conditions, allowing for perturbations of threshold eigenvalues and relaxed Fermi Golden rule. The exponential decay rate of resonances is addressed; its uniqueness in the time dependent picture is ...
Costin, O., Soffer, A.
openaire   +2 more sources

General Decay of the Moore–Gibson–Thompson Equation with Viscoelastic Memory of Type II

open access: yesJournal of Function Spaces, 2022
This study deals with the general decay of solutions of a new class of Moore–Gibson–Thompson equation with respect to the memory kernel of type II. By using the energy method in the Fourier space, we establish the main results.
Salah Boulaaras   +2 more
doaj   +1 more source

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