Results 21 to 30 of about 33,187 (303)

On Fractional Smoothness of Modulus of Functions

open access: yesAnnals of Applied Mathematics, 2021
We consider the Nemytskii operators $u\to |u|$ and $u\to u^{\pm}$ in a bounded domain $\Omega$ with $C^2$ boundary.
openaire   +4 more sources

Generalized Modulus of Smoothness in Banach Spaces

open access: yesJournal of Harbin University of Science and Technology, 2018
In order to study the geometric constants of Banach space,a new method is extended to study new constants by means of extending the modulus of smoothness to the generalized smooth mode.
ZHAO Liang, WANG Wei-wei, ZHANG Xing
doaj   +1 more source

On Shape Parameter α-Based Approximation Properties and q-Statistical Convergence of Baskakov-Gamma Operators

open access: yesJournal of Mathematics, 2022
We construct a novel family of summation-integral-type hybrid operators in terms of shape parameter α∈0,1 in this paper. Basic estimates, rate of convergence, and order of approximation are also studied using the Korovkin theorem and the modulus of ...
Ming-Yu Chen   +4 more
doaj   +1 more source

On moduli of smoothness of fractional order [PDF]

open access: yes, 2005
In this paper we consider the properties of moduli of smoothness of fractional order. The main result of the paper describes the equivalence of the modulus of smoothness and a function from some ...
Tikhonov, Sergey Yu.   +1 more
core   +1 more source

The Approximation of Weighted Hölder Functions by Fourier-Jacobi Polynomials to the Singular Sturm-Liouville Operator

open access: yesمجلة بغداد للعلوم, 2022
      In this work, a weighted H lder function that approximates a Jacobi polynomial which solves the second order singular Sturm-Liouville equation is discussed.
Habeeb A. Aal-Rkhais   +2 more
doaj   +1 more source

Approximation properties of generalized Baskakov operators

open access: yesAIMS Mathematics, 2021
The present article is a continuation of the work done by Aral and Erbay [1]. We discuss the rate of convergence of the generalized Baskakov operators considered in the above paper with the aid of the second order modulus of continuity and the unified ...
Purshottam Narain Agrawal   +2 more
doaj   +1 more source

Optimal inference in a class of regression models [PDF]

open access: yes, 2016
We consider the problem of constructing confidence intervals (CIs) for a linear functional of a regression function, such as its value at a point, the regression discontinuity parameter, or a regression coefficient in a linear or partly linear regression.
Armstrong, Timothy B., Kolesár, Michal
core   +5 more sources

Some Moduli of Angles in Banach Spaces

open access: yesMathematics, 2022
In this paper, we mainly discuss the angle modulus of convexity δXa(ϵ) and the angle modulus of smoothness ρXa(ϵ) in a real normed linear space X, which are closely related to the classical modulus of convexity δX(ϵ) and the modulus of smoothness ρX(ϵ ...
Dandan Du   +3 more
doaj   +1 more source

Critical Keller-Segel meets Burgers on ${\mathbb S}^1$: large-time smooth solutions [PDF]

open access: yes, 2016
We show that solutions to the parabolic-elliptic Keller-Segel system on ${\mathbb S}^1$ with critical fractional diffusion $(-\Delta)^\frac{1}{2}$ remain smooth for any initial data and any positive time. This disproves, at least in the periodic setting,
Burczak, Jan, Granero-Belinchón, Rafael
core   +2 more sources

Some Modulus and Normal Structure in Banach Space

open access: yesJournal of Inequalities and Applications, 2009
We present some sufficient conditions for which a Banach space X has normal structure in terms of the modulus of U-convexity, modulus of W∗-convexity, and the coefficient R(1,X), which generalized some well-known results.
Zhanfei Zuo, Yunan Cui
doaj   +2 more sources

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