Results 31 to 40 of about 94,079 (317)

Kolmogorov inequalities for norms of Marchaud-type fractional derivatives of multivariate functions

open access: yesResearches in Mathematics, 2020
We obtain new sharp Kolmogorov type inequalities, estimating the norm of mixed Marchaud type derivative of multivariate function through the C-norm of function itself and its norms in Hölder spaces.
N.V. Parfinovych, V.V. Pylypenko
doaj   +1 more source

SOME INEQUALITIES BETWEEN THE BEST SIMULTANEOUS APPROXIMATION AND MODULUS OF CONTINUITY IN THE WEIGHTED BERGMAN SPACE

open access: yesUral Mathematical Journal, 2023
Some inequalities between the best simultaneous approximation of functions and their intermediate derivatives, and the modulus of continuity in a weighted Bergman space are obtained. When the weight function is \(\gamma(\rho)=\rho^\alpha,\) \(\alpha>0\),
Muqim S. Saidusainov
doaj   +1 more source

ON AN ESTIMATE FOR THE MODULUS OF CONTINUITY OF A NONLINEAR INVERSE PROBLEM

open access: yesUral Mathematical Journal, 2015
A reverse time problem is considered for a semilinear parabolic equation. Two-sided estimates are obtained for the norms of values of a nonlinear operator in terms of the norms of values of the corresponding linear operator.
Elena V. Tabarintseva
doaj   +1 more source

A Dunkl Analogue of Operators Including Two-variable Hermite polynomials

open access: yes, 2017
The aim of this paper is to introduce a Dunkl generalization of the operators including two variable Hermite polynomials which are defined by Krech [14](Krech, G.
Aktaş, Rabia   +2 more
core   +1 more source

$\text{TT}^{\Box}_{\mathcal C}$: a Family of Extensional Type Theories with Effectful Realizers of Continuity [PDF]

open access: yesLogical Methods in Computer Science
$\text{TT}^{\Box}_{{\mathcal C}}$ is a generic family of effectful, extensional type theories with a forcing interpretation parameterized by modalities.
Liron Cohen, Vincent Rahli
doaj   +1 more source

Application of the Modulus of Continuity in Characterizing Geodesics

open access: yesپژوهش‌های ریاضی, 2020
Introduction This paper concerns an application of the modulus of continuity in characterizing geodesics. The modulus of continuity of a continuous function between metric spaces is a two variable function which assigns to each point and to each positive
Hojjat Farzadfard
doaj  

Best Multiplier Approximation of Unbounded Periodic Functions in L_(p,∅_n ) (B),B=[0,2π] Using Discrete Linear Positive Operators

open access: yesمجلة بغداد للعلوم, 2020
The purpose of this paper is to find the best multiplier approximation of unbounded functions in    –space by using some discrete linear positive operators.
Saheb AL- Saidy   +2 more
doaj   +1 more source

Modulus of continuity estimates for fully nonlinear parabolic equations [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2021
We prove that the moduli of continuity of viscosity solutions to fully nonlinear parabolic partial differential equations are viscosity subsolutions of suitable parabolic equations of one space variable. As applications, we obtain sharp Lipschitz bounds and gradient estimates for fully nonlinear parabolic equations with bounded initial data, via ...
openaire   +2 more sources

Holder continuity of absolutely continuous spectral measures for one-frequency Schrodinger operators

open access: yes, 2009
We establish sharp results on the modulus of continuity of the distribution of the spectral measure for one-frequency Schrodinger operators with Diophantine frequencies in the region of absolutely continuous spectrum.
A. Avila   +19 more
core   +1 more source

Bernstein Polynomials and Modulus of Continuity

open access: yesJournal of Approximation Theory, 2000
The author describes several properties related to the first order modulus of continuity, which are preserved by the operator given by Bernstein polynomials. Let the function \(\omega(t)\) on \([0,1]\) be a modulus of continuity. By \(H^\omega\) we denote the class of continuous functions on \([0,1]\) satisfying the inequality \(\omega(f,t)\leq\omega(t)
openaire   +2 more sources

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