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arXiv 1712.04321math.CA
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一类加权混合空间上分数次积分算子和线性算子的估计

Estimates for fractional integral operators and linear commutators on certain weighted amalgam spaces

Hua Wang

摘要:

本文首先引入了几类新的加权汞齐空间。然后在这些新的函数空间上给出了分数次积分算子$I_γ$的加权强型和加权弱型估计。此外,还建立了由$b$和$I_γ$生成的线性算子$[b,I_γ]$的加权强型估计和端点估计.另外,我们还研究了加权汞齐空间上$I_γ$和$[b,I_γ]$的双权弱型不等式的相关问题,并给出了一些结果。基于这些结果和点态控制,我们可以在加权混合空间中证明涉及分数次极大算子$M_γ$和广义分数次积分$\mathcal L^{-γ/2}$的范数不等式,其中$0<γ<n$和$\mathcal L$是$L^2(\mathbb R^n)$上具有高斯核界的解析半群的无穷小生成元.

英文摘要:

In this paper, we first introduce some new classes of weighted amalgam spaces. Then we give the weighted strong-type and weak-type estimates for fractional integral operators $I_γ$ on these new function spaces. Furthermore, the weighted strong-type estimate and endpoint estimate of linear commutators $[b,I_γ]$ generated by $b$ and $I_γ$ are established as well. In addition, we are going to study related problems about two-weight, weak type inequalities for $I_γ$ and $[b,I_γ]$ on the weighted amalgam spaces and give some results. Based on these results and pointwise domination, we can prove norm inequalities involving fractional maximal operator $M_γ$ and generalized fractional integrals $\mathcal L^{-γ/2}$ in the context of weighted amalgam spaces, where $0<γ<n$ and $\mathcal L$ is the infinitesimal generator of an analytic semigroup on $L^2(\mathbb R^n)$ with Gaussian kernel bounds.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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