Results 11 to 20 of about 27,220 (202)

A new approach to weighted Sobolev spaces [PDF]

open access: yesMonatshefte für Mathematik
Abstract We present in this paper a new way to define weighted Sobolev spaces when the weight functions are arbitrary small. This new approach can replace the old one consisting in modifying the domain by removing the set of points where at least one of the weight functions is very small.
Kebiche D.
openaire   +7 more sources

Marine Anoxia and Ocean Acidification During the End‐Permian Extinction

open access: yesGeophysical Monograph Series, Page 325-340., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Ying Cui   +4 more
wiley  

+5 more sources

Weighted Sobolev spaces: Markov-type inequalities and duality

open access: yesBulletin of Mathematical Sciences, 2017
Weighted Sobolev spaces play a main role in the study of Sobolev orthogonal polynomials. The aim of this paper is to prove several important properties of weighted Sobolev spaces: separability, reflexivity, uniform convexity, duality and Markov-type ...
Francisco Marcellán   +2 more
doaj   +1 more source

Littlewood-Paley equivalence and homogeneous Fourier multipliers [PDF]

open access: yes, 2016
We consider certain Littlewood-Paley operators and prove characterization of some function spaces in terms of those operators. When treating weighted Lebesgue spaces, a generalization to weighted spaces will be made for H\"ormander's theorem on the ...
Sato, Shuichi
core   +3 more sources

Geometric ergodicity in a weighted Sobolev space [PDF]

open access: yesThe Annals of Probability, 2020
For a discrete-time Markov chain $\{X(t)\}$ evolving on $\Re^\ell$ with transition kernel $P$, natural, general conditions are developed under which the following are established: 1. The transition kernel $P$ has a purely discrete spectrum, when viewed as a linear operator on a weighted Sobolev space $L_\infty^{v,1}$ of functions with norm, $$ \|f\|_{v,
Devraj, Adithya   +2 more
openaire   +4 more sources

Weighted Sobolev Spaces on Curves

open access: yesJournal of Approximation Theory, 2002
45 pages, no figures.-- MSC1987 codes: 41A10, 46E35, 46G10. MR#: MR1934626 (2003j:46038) Zbl#: Zbl 1019.46026 In this paper we present a definition of weighted Sobolev spaces on curves and find general conditions under which the spaces are complete for non-closed compact curves. We also prove the density of the polynomials in these spaces and, finally,
Alvarez, Venancio   +3 more
openaire   +3 more sources

Interpolation of weighted Sobolev spaces [PDF]

open access: yesJournal of Functional Analysis, 2019
In this work we present a newly developed study of the interpolation of weighted Sobolev spaces by the complex method. We show that in some cases, one can obtain an analogue of the famous Stein-Weiss theorem for weighted $L^{p}$ spaces. We consider an example which gives some indication that this may not be possible in all cases.
Michael Cwikel, Amit Einav
openaire   +3 more sources

On Boundedness of Fractional Hadamard Integration and Hadamard-Type Integration in LebesgueSpaces with Mixed Norm

open access: yesСовременная математика: Фундаментальные направления, 2022
In this paper, we consider the boundedness of integrals of fractional Hadamard integration and Hadamard-type integration (mixed and directional) in Lebesgue spaces with mixed norm.
M. U. Yakhshiboyev
doaj   +1 more source

A density property for fractional weighted Sobolev spaces [PDF]

open access: yes, 2015
In this paper we show a density property for fractional weighted Sobolev spaces. That is, we prove that any function in a fractional weighted Sobolev space can be approximated by a smooth function with compact support. The additional difficulty in this
Dipierro, Serena, Valdinoci, Enrico
core   +4 more sources

Weak solution for nonlinear degenerate elliptic problem with Dirichlet-type boundary condition in weighted Sobolev spaces [PDF]

open access: yesMathematica Bohemica, 2022
In the present paper, we prove the existence and uniqueness of weak solution to a class of nonlinear degenerate elliptic $p$-Laplacian problem with Dirichlet-type boundary condition, the main tool used here is the variational method combined with the ...
Abdelali Sabri   +2 more
doaj   +1 more source

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