Abstract
We study fractional integrals on spaces of homogeneous type defined byI αf(x)=∫Xf(y)|B(x,d(x,y))|ga−1dμ(y), 0<α<1. If\(1< p\frac{1}{\alpha },\frac{1}{q} = \frac{1}{p} - \alpha \), we show that Iαf is of strong type (p,q) and is of weak type (\(\left( {1,\frac{1}{{1 - \alpha }}} \right)\)). We also consider the necessary and sufficient conditions on two weights for which Iαf is of weak type (p,q) with respect to (w,v).
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Supported by National Natural Sciene Foundation of China
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Wenjie, P. Fractional integrals on spaces of homogeneous type. Approx. Theory & its Appl. 8, 1–15 (1992). https://doi.org/10.1007/BF02907588
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DOI: https://doi.org/10.1007/BF02907588