Results 71 to 80 of about 8,767,642 (231)

Separable Quadratic Stochastic Operators [PDF]

arXiv, 2009
We consider quadratic stochastic operators, which are separable as a product of two linear operators. Depending on properties of these linear operators we classify the set of the separable quadratic stochastic operators: first class of constant operators, second class of linear and third class of nonlinear (separable) quadratic stochastic operators ...
arxiv  

Boundary conformal fields and Tomita--Takesaki theory

, 2003
Motivated by formal similarities between the continuum limit of the Ising model and the Unruh effect, this paper connects the notion of an Ishibashi state in boundary conformal field theory with the Tomita--Takesaki theory for operator algebras.
Araki, Birke, Cardy, Cardy, Cardy, Ghoshal, Guillemin, Ishibashi, K. C. Hannabuss, Leclair, Longo, M. Semplice, Osterwalder, Powers, Schrader, Sewell, Skorik, Unruh, van Daele, Zamolodchikov   +19 more
core   +2 more sources

Approximation properties by Schurer type q-Kantorovich–Stancu shifted knots operators

Journal of Inequalities and Applications
We design the Schurer type Kantorovich–Stancu operators by using shifted knots in the quantum calculus. We obtain the convergence and other related approximation properties of these operators.
Abdullah Alotaibi
doaj   +1 more source

Approximation by Schurer Type λ-Bernstein–Bézier Basis Function Enhanced by Shifted Knots Properties

Mathematics
In this article, a novel Schurer form of λ-Bernstein operators augmented by Bézier basis functions is presented by utilizing the features of shifted knots.
Abdullah Alotaibi
doaj   +1 more source

Generalized ( p , q ) $(p,q)$ -Bleimann-Butzer-Hahn operators and some approximation results

Journal of Inequalities and Applications, 2017
The aim of this paper is to introduce a new generalization of Bleimann-Butzer-Hahn operators by using ( p , q ) $(p,q)$ -integers which is based on a continuously differentiable function μ on [ 0 , ∞ ) = R + $[0,\infty)=\mathbb{R}_{+}$ . We establish the
M Mursaleen, Md Nasiruzzaman, Khursheed J Ansari, Abdullah Alotaibi   +3 more
doaj   +1 more source

Blending type approximation by τ-Baskakov-Durrmeyer type hybrid operators

Advances in Difference Equations, 2020
In this work, we construct a Durrmeyer type modification of the τ-Baskakov operators depends on two parameters α > 0 $\alpha >0$ and τ ∈ [ 0 , 1 ] $\tau \in [0,1]$ .
S. A. Mohiuddine, Arun Kajla, M. Mursaleen, Mohammed A. Alghamdi   +3 more
doaj   +1 more source

Spectral resolutions for non-self-adjoint block convolution operators [PDF]

arXiv, 2022
The paper concerns the spectral theory for a class of non-self-adjoint block convolution operators. We mainly discuss the spectral representations of such operators. It is considered the general case of operators defined on Banach spaces. The main results are applied to periodic Jacobi matrices.
arxiv  

Generalization of Darbo-type theorem and application on existence of implicit fractional integral equations in tempered sequence spaces

Alexandria Engineering Journal, 2022
The aim of this work is to give some fixed point results based on the technique of measure of noncompactness which extend the classical Darbo’s theorem.
Anupam Das, S.A. Mohiuddine, Abdullah Alotaibi, Bhuban Chandra Deuri   +3 more
doaj  

On convergence of explicit finite volume scheme for one-dimensional three-component two-phase flow model in porous media

Demonstratio Mathematica, 2021
In this work, we develop and analyze an explicit finite volume scheme for a one-dimensional nonlinear, degenerate, convection–diffusion equation having application in petroleum reservoir.
Mostefai Mohamed Lamine, Choucha Abdelbaki, Cherif Bahri   +2 more
doaj   +1 more source

Some Operators Associated to Rarita-Schwinger Type Operators [PDF]

arXiv, 2011
In this paper we study some operators associated to the Rarita-Schwinger operators. They arise from the difference between the Dirac operator and the Rarita-Schwinger operators. These operators are called remaining operators. They are based on the Dirac operator and projection operators $I-P_k.$ The fundamental solutions of these operators are harmonic
arxiv