Results 31 to 40 of about 97 (96)

Lebesgue Points of Besov and Triebel–Lizorkin Spaces with Generalized Smoothness

open access: yesMathematics, 2021
In this article, the authors study the Lebesgue point of functions from Hajłasz–Sobolev, Besov, and Triebel–Lizorkin spaces with generalized smoothness on doubling metric measure spaces and prove that the exceptional sets of their Lebesgue points have ...
Ziwei Li, Dachun Yang, Wen Yuan
doaj   +1 more source

Local Characterizations of Besov and Triebel-Lizorkin Spaces with Variable Exponent

open access: yesJournal of Function Spaces, 2014
We introduce new Besov and Triebel-Lizorkin spaces with variable integrable exponent, which are different from those introduced by the second author early.
Baohua Dong, Jingshi Xu
doaj   +1 more source

Boundedness of Generalized Parametric Marcinkiewicz Integrals Associated to Surfaces

open access: yesMathematics, 2019
In this article, the boundedness of the generalized parametric Marcinkiewicz integral operators M Ω , ϕ , h , ρ ( r ) is considered. Under the condition that Ω is a function in L q ( S n - 1 ) with q &
Mohammed Ali, Oqlah Al-Refai
doaj   +1 more source

Continuous Characterizations of Besov-Lizorkin-Triebel Spaces and New Interpretations as Coorbits

open access: yesJournal of Function Spaces and Applications, 2012
We give characterizations for homogeneous and inhomogeneous Besov-Lizorkin-Triebel spaces (H. Triebel 1983, 1992, and 2006) in terms of continuous local means for the full range of parameters.
Tino Ullrich
doaj   +1 more source

Some of integral operators on space of Triebel-Lizorkin(Triebel-Lizorkin空间上的一类积分算子)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2004
主要讨论了由分数次积分算子,奇异积分算子及Lipschiz函数所构成的几类Toeplitz型算子是Lp 到有界的, ,其中,从而的Lp到有界性,包括了当交换子TA是Lp到有界性及是Lp到有界性,.
WANGLei(王蕾)
doaj   +1 more source

Traces of Besov, Triebel-Lizorkin and Sobolev Spaces on Metric Spaces

open access: yesAnalysis and Geometry in Metric Spaces, 2017
We establish trace theorems for function spaces defined on general Ahlfors regular metric spaces Z. The results cover the Triebel-Lizorkin spaces and the Besov spaces for smoothness indices s < 1, as well as the first order Hajłasz-Sobolev space M1,p(Z).
Saksman Eero, Soto Tomás
doaj   +1 more source

Littlewood, Paley and almost‐orthogonality: a theory well ahead of its time

open access: yesJournal of the London Mathematical Society, Volume 113, Issue 5, May 2026.
Abstract The classic paper by Littlewood and Paley [J. Lond. Math. Soc. (1), 6 (1931), 230–233] marked the birth of Littlewood–Paley theory. We discuss this paper and its impact from a historical perspective, include an outline of the results in the paper and their subsequent significance in relation to developments over the last century, and set them ...
Anthony Carbery
wiley   +1 more source

Boundedness of the commutators for the Marcinkiewicz integral in Triebel-Lizorkin space(Marcinkiewicz交换子在Triebel-Lizorkin空间中的有界性)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2003
类似Plauszynski相应定理的证明方法,研究了Marcinkiewicz交换子Cb在Triebel-Lizorkin空间的有界性质,得到如下结果 ...
CHENDong-xiang(陈冬香)   +1 more
doaj   +1 more source

Generalized quasi‐geostrophic equation in critical Lorentz–Besov spaces, based on maximal regularity

open access: yesMathematische Nachrichten, Volume 299, Issue 3, Page 637-660, March 2026.
Abstract We consider the quasi‐geostrophic equation with its principal part (−Δ)α${(-\mathrm{\Delta})^{\alpha}}$ for α>1/2$\alpha >1/2$ in Rn$\mathbb {R}^n$ with n≥2$n \ge 2$. We show that for every initial data θ0∈Ḃr,q1−2α+nr$\theta _0 \in \dot{B}^{1-2\alpha + \frac{n}{r}}_{r, q}$ with 1
Hideo Kozono   +2 more
wiley   +1 more source

Estimates for certain class of rough generalized Marcinkiewicz functions along submanifolds

open access: yesOpen Mathematics, 2023
We establish certain delicate Lp{L}^{p} bounds for a class of generalized Marcinkiewicz integral operators along submanifolds with rough kernels.
Ali Mohammed, Al-Qassem Hussain
doaj   +1 more source

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