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本文主要介绍近年来国内外研究者利用高正则性小波和多分辨分析技术研究与Besov-Q型空间B_(p,q)~(γ_1,γ_2)(R~n)和Triebel-Lizorkin-Q型空间F_(p,q)~(γ_1,γ_2)(R~n)相关的调和分析问题及其相关应用所取得的一些进展,包括B_(p,q)~(γ_1,γ_2)(R~n)和F_(p,q)~(γ_1,γ_2)(R~n)的小波刻画、Calderon-Zygmund算子有界性、调和延拓以及流体方程适定性. 相似文献
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This study introduces a pre-orthogonal adaptive Fourier decomposition(POAFD)to obtain approximations and numerical solutions to the fractional Laplacian initial value problem and the extension problem of Caffarelli and Silvestre(generalized Poisson equation).As a first step,the method expands the initial data function into a sparse series of the fundamental solutions with fast convergence,and,as a second step,makes use of the semigroup or the reproducing kernel property of each of the expanding ... 相似文献
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Let L=△Hn + V be a Schrdinger operator on Heisenberg group H n,where △Hn is the sublaplacian and the nonnegative potential V belongs to the reverse H¨older class BQ/2,where Q is the homogeneous dimension of H n.Let T1 =(△Hn + V)-1 V,T2 =(△Hn +V)-1/2 V 1/2,and T 3 =(△Hn +V)-1/2 Hn,then we verify that [b,Ti],i = 1,2,3 are bounded on some Lp(Hn),where b ∈ BMO(Hn).Note that the kernel of Ti,i=1,2,3 has no smoothness. 相似文献
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本文研究了一类与对数函数相关的n维Q型空间——Qlog,λm(Rn).首先给出Qlog,λm(Rn)的定义和一些基本性质.进而利用Poisson积分和调和函数空间Hlog,λm(R+n+1),得到了Qlog,λm(Rn)的调和延拓,以及Hlog,λm(R+n+1)的边值问题. 相似文献
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本文引入了一类Q-型空间Qκ,γ(Rn),利用Poisson积分得到了Qκ,γ(Rn)的Carleson型刻画.同时也得到了此类空间的小波刻画. 相似文献
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