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arXiv · 1001.5072

A T1 theorem for weakly singular integral operators

Antti V. Vähäkangas
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Abstract

We establish conditions in the spirit of the T1 theorem of David and Journé which guarantee the boundedness of \nabla T on L^p(\R^n), where T is an integral transformation and 1<p<\infty. These are natural size and regularity conditions for the kernel of the integral transformation, along with the sharp condition T1,T^t1\in\mathcal{I}^1(\mathrm{BMO}). A simple example satisfying these conditions is the Riesz potential denoted by \mathcal{I}^1.

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Antti V. Vähäkangas. 2010-01-29. A T1 theorem for weakly singular integral operators. https://arxiv.org/abs/1001.5072

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