Results 11 to 20 of about 8,919 (268)

On functions of van der Waerden type [PDF]

Известия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2023
Let $\omega(t)$ be an arbitrary modulus of continuity type function, such that $\omega(t)/t\to+\infty$, as $t\to+0$. We construct a continuous nowhere-differentiable function $V_\omega(x)$, $x\in[0;1]$, that satisfies the following conditions: 1)  ...
Rubinstein, Aleksandr I., Telyakovskii, Dmitrii S.   +1 more
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Approximate properties of Abel-Poisson integrals on classes of differentiable functions defined by moduli of continuity

Karpatsʹkì Matematičnì Publìkacìï, 2023
The paper deals with the problem of approximation in the uniform metric of $W^{1}H_{\omega}$ classes using one of the classical linear summation methods for Fourier series given by a set of functions of a natural argument, namely, using the Abel-Poisson ...
Yu.I. Kharkevych, T.A. Stepaniuk
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A new kind of Bernstein-Schurer-Stancu-Kantorovich-type operators based on q-integers

Journal of Inequalities and Applications, 2017
Agrawal et al. (Boll. Unione Mat. Ital. 8:169-180, 2015) introduced a Stancu-type Kantorovich modification of the operators proposed by Ren and Zeng (Bull. Korean Math. Soc.
Ruchi Chauhan, Nurhayat Ispir, PN Agrawal   +2 more
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Composition in Modulus Maps on Semigroups of Continuous Functions [PDF]

Tokyo Journal of Mathematics, 2021
For locally compact Hausdorff spaces $X$ and $Y$, and function algebras $A$ and $B$ on $X$ and $Y$, respectively, surjections $T:A \longrightarrow B$ satisfying norm multiplicative condition $\|Tf\, Tg\|_Y =\|fg\|_X$, $f,g\in A$, with respect to the supremum norms, and those satisfying $\||Tf|+|Tg|\|_Y=\||f|+|g|\|_X$ have been extensively studied ...
Jafarzadeh, Bagher, Sady, Fereshteh
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Approximation results on Dunkl generalization of Phillips operators via q-calculus

Advances in Difference Equations, 2019
The main purpose of this paper is to construct q-Phillips operators generated by Dunkl generalization. We prove several results of Korovkin type and estimate the order of convergence in terms of several moduli of continuity.
Md. Nasiruzzaman, Aiman Mukheimer, M. Mursaleen   +2 more
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Uniform modulus of continuity of random fields [PDF]

Monatshefte für Mathematik, 2009
A sufficient condition for the uniform modulus of continuity of a random field $X = \{X(t), t \in \R^N\}$ is provided. The result is applicable to random fields with heavy-tailed distribution such as stable random fields.
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Functions with a concave modulus of continuity [PDF]

Proceedings of the American Mathematical Society, 1974
In [1], C. Goffman proved that, if σ \sigma is a modulus of continuity, then the set of all functions f in C [ 0 , 1 ] C[0,1] such that m ( { x : f ( x ) = g ( x ) } )
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On the integral modulus of continuity of Fourier series [PDF]

Proceedings of the Indian Academy of Sciences - Section A, 1988
AbstractFor a wide class of sine trigonometric series we obtain an estimate for the integral modulus of continuity.
Ram, Babu, Kumari, Suresh
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Functions of Bounded kth p-Variation and Continuity Modulus

Journal of Function Spaces, 2015
A scale of spaces exists connecting the class of functions of bounded kth p-variation in the sense of Riesz-Merentes with the Sobolev space of functions with p-integrable kth derivative.
Odalis Mejía, Pilar Silvestre
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Szász-Durrmeyer operators involving Boas-Buck polynomials of blending type

Journal of Inequalities and Applications, 2017
The present paper introduces the Szász-Durrmeyer type operators based on Boas-Buck type polynomials which include Brenke type polynomials, Sheffer polynomials and Appell polynomials considered by Sucu et al. (Abstr. Appl. Anal. 2012:680340, 2012).
Manjari Sidharth, PN Agrawal, Serkan Araci   +2 more
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