Results 1 to 10 of about 2,461 (148)

Lebesgue functions and Lebesgue constants in polynomial interpolation [PDF]

open access: yesJournal of Inequalities and Applications, 2016
The Lebesgue constant is a valuable numerical instrument for linear interpolation because it provides a measure of how close the interpolant of a function is to the best polynomial approximant of the function.
Bayram Ali Ibrahimoglu
doaj   +5 more sources

Generalized Lebesgue Points for Hajłasz Functions

open access: yesJournal of Function Spaces, 2018
Let X be a quasi-Banach function space over a doubling metric measure space P. Denote by αX the generalized upper Boyd index of X.
Toni Heikkinen
doaj   +4 more sources

Two-dimensional limit series in ultraspherical Jacobi polynomials and their approximative properties [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2021
Let $C[-1,1]$ be the space of functions continuous on the segment $[-1,1]$, $C[-1,1]^2$ be the space of functions continuous on the square $[-1,1]^2$. We denote by $P_n^\alpha(x)$ the ultraspherical Jacobi polynomials.
Guseinov, Ibraghim G.   +1 more
doaj   +1 more source

A note on maximal operators related to Laplace-Bessel differential operators on variable exponent Lebesgue spaces

open access: yesOpen Mathematics, 2021
In this paper, we consider the maximal operator related to the Laplace-Bessel differential operator (BB-maximal operator) on Lp(⋅),γ(Rk,+n){L}_{p\left(\cdot ),\gamma }\left({{\mathbb{R}}}_{k,+}^{n}) variable exponent Lebesgue spaces.
Kaya Esra
doaj   +1 more source

A Generalization of the Hausdorff Dimension Theorem for Deterministic Fractals

open access: yesMathematics, 2021
How many fractals exist in nature or the virtual world? In this paper, we partially answer the second question using Mandelbrot’s fundamental definition of fractals and their quantities of the Hausdorff dimension and Lebesgue measure.
Mohsen Soltanifar
doaj   +1 more source

Kaitan Antara Ruang Sobolev dan Ruang Lebesgue

open access: yesJurnal Fourier, 2017
Measureable function space and its norm with integral form has been known, one of which is Lebegsue Space and Sobolev Space. In applied Mathematics like in finding solution of partial differential equations, that two spaces is soo usefulness.
Pipit Pratiwi Rahayu
doaj   +1 more source

Geometry of Lebesgue-Bochner Function Spaces-Smoothness [PDF]

open access: yesTransactions of the American Mathematical Society, 1973
There exist real Banach spaces E such that the norm in E is of class C' away from zero; however, for any p, I < p < oo, the norm in the Lebesgue-Bochner function space LP(E, ,u) is not even twice differentiable away from zero. The main objective of this paper is to give a complete determination of the order of differentiability of the norm function in ...
Leonard, I. E., Sundaresan, K.
openaire   +6 more sources

Rotundity in Lebesgue-Bochner function spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1980
This paper concerns the isometric theory of the Lebesgue-Bochner function space L p ( μ , X ) {L^p}(\mu ,\,X) where 1 > p > ∞ 1 > p > \infty .
Smith, Mark A., Turett, Barry
openaire   +1 more source

SIFAT-SIFAT DASAR PERLUASAN INTEGRAL LEBESGUE

open access: yesBarekeng, 2012
EL-Integral is extended of Lebesgue integral, 1 k b EL f d L f d . Lebesgue integral is defined with early arrange measure theory that famous with Lebesgue measure.
Yopi A. Lesnussa   +2 more
doaj   +1 more source

Property (H) in Lebesgue-Bochner Function Spaces [PDF]

open access: yesProceedings of the American Mathematical Society, 1985
We prove that if a Banach space X X has the property (HR) and if l 1 {l_1} is not isomorphic to a subspace of X X , then every point on the unit sphere of X X is a denting point of the closed unit ball.
Lin, Bor-Luh, Lin, Pei-Kee
openaire   +2 more sources

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