Results 61 to 70 of about 397 (184)

Smooth Decompositions of Triebel-Lizorkin and Besov Spaces on Product Spaces of Homogeneous Type

open access: yesJournal of Function Spaces, 2014
We introduce Triebel-Lizorkin and Besov spaces by Calderón’s reproducing formula on product spaces of homogeneous type. We also obtain smooth atomic and molecular decompositions for these spaces.
Fanghui Liao   +2 more
doaj   +1 more source

Recent Advances in Numerical Methods for Stochastic Differential Equations: From Classical Schemes to Wavelet‐Based Techniques

open access: yesJournal of Applied Mathematics, Volume 2026, Issue 1, 2026.
Stochastic processes prevail throughout fields as diverse as finance, physics, and biology, demanding increasingly sophisticated mathematical tools. These are the principal components of modeling systems influenced by random forces. The present work offers a structured examination of the solution landscape, progressing from foundational classical ...
Danamma I. Badigannavar   +2 more
wiley   +1 more source

Tensor products of abstract Besov spaces

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
We prove the interpolation theorem for tensor products of abstract Besov spaces, associated with closed operators in Banach spaces and show its application to the problems of approximations of elements of tensor products of Banach spaces.
M. I. Dmytryshyn
doaj   +1 more source

Composition Operators on Some Banach Spaces of Harmonic Mappings

open access: yesJournal of Function Spaces, 2020
We study the composition operators on Banach spaces of harmonic mappings that extend several well-known Banach spaces of analytic functions on the open unit disk in the complex plane, including the α-Bloch spaces, the growth spaces, the Zygmund space ...
Munirah Aljuaid, Flavia Colonna
doaj   +1 more source

Regularity Criteria for the Velocity Field of Three‐Dimensional Shear‐Thinning Fluids in the Framework of Besov Spaces

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
This paper investigates the regularity criteria for the velocity field of three‐dimensional shear‐thinning fluids in the framework of Besov spaces. We obtain that when the specific negative exponent of the velocity field satisfies certain integrability conditions in Besov space, its regularity can be completely characterized by a set of parameter ...
Tianli Li   +3 more
wiley   +1 more source

A homogeneity property for Besov spaces

open access: yesJournal of Function Spaces and Applications, 2007
A homogeneity property for some Besov spaces Bp,qs is proved. An analogous property for some Fp,qs spaces is already known.
António M. Caetano   +2 more
doaj   +1 more source

Local Well‐Posedness for the Fourth‐Order Schrödinger Equation With Quadratic Derivative Nonlinearities in Fourier–Lebesgue Spaces

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
We investigate the Cauchy problem for the fourth‐order Schrödinger equation with quadratic nonlinearities involving second‐order derivatives: uxxu, uxxū, (ux)2, uūxx, and |ux|2, where u = u(x, t) is a complex‐valued function defined on R×R. The flow map of this Cauchy problem with the nonlinear terms uxxu or uxxū fails to be C2 differentiable at zero ...
Long Xiao, Ting Chen, Xian-Ming Gu
wiley   +1 more source

Distances from Bloch functions to some Möbius invariant function spaces in the unit ball of ℂn

open access: yesJournal of Function Spaces and Applications, 2009
Distance formulae from Bloch functions to some Möbius invariant function spaces in the unit ball of ℂn such as Qs spaces, little Bloch space ℬ0 and Besov spaces Bp are given.
Wen Xu
doaj   +1 more source

Random Gel′fand Approximation Between Anisotropic Spaces and Function Spaces With Mixed Smoothness

open access: yesJournal of Function Spaces, Volume 2026, Issue 1, 2026.
This paper investigates the complexity associated with function approximation between anisotropic spaces and spaces of mixed smoothness within the framework of adaptive Monte Carlo methods. Specifically, we analyze the information complexity for approximating function classes of mixed smoothness Fmix,pr(1 ≤ p < ∞) in anisotropic spaces FqR(1 ≤ q ...
Bo Feng   +4 more
wiley   +1 more source

Nikol’skii–Type Inequalities for Trigonometric Polynomials for Lorentz–Zygmund Spaces

open access: yesJournal of Function Spaces, 2020
Nikol’skii–type inequalities, that is inequalities between different metrics of trigonometric polynomials on the torus Td for the Lorentz–Zygmund spaces, are obtained. The results of previous paper “Nikol’skii inequalities for Lorentz–Zygmund spaces” are
Leo R. Ya. Doktorski
doaj   +1 more source

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