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Approximation Theory and Its Applications
Article . 2000 . Peer-reviewed
License: Springer Nature TDM
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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao
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Boundedness of generalized fractional integrals in weighted Herz-type spaces

Authors: Tang, Canqin; Yang, Dachun;

Boundedness of generalized fractional integrals in weighted Herz-type spaces

Abstract

Let \(B_k=\{x\in {\mathbb R}^n; |x|\leq 2^k\}\) and \(C_k=B_k \setminus B_{k-1}\) for \(k\in \mathbb Z\). Let \(\chi_k\) denote the characteristic function of the set \(C_k\). Suppose \(-\infty0\) such that \(\int_{|x|\leq |Q|^{1/n}}\Phi(x) dx|Q|^{-1}[\omega(Q)]^{1/q_2} [\omega_1(Q)]^{1-1/q_1}\leq C\) for all cubes \(Q\subset \mathbb R^n\). This result corresponds to a work of Pérez in the case of the weighted Lebesgue spaces \(L_\omega^p\) [\textit{C. Pérez}, Indiana Univ. Math. J. 43, No. 2, 663-683 (1994; Zbl 0809.42007)]. The authors apply their results to the usual Riesz fractional integral operator \(I_\beta\). They also treat the weighted weak boundedness case and the weighted Herz-type Hardy space case.

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Keywords

weighted weak boundedness, fractional integral, Singular and oscillatory integrals (Calderón-Zygmund, etc.), Maximal functions, Littlewood-Paley theory, Herz spaces, weighted Herz-type Hardy space, \(H^p\)-spaces

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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