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arxiv: 1001.1998 · v1 · submitted 2010-01-12 · 🧮 math.CA

Singular Integrals Along N Directions in R²

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keywords alongdirectionsmaximaloptimalsingulararbitraryatorbound
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We prove optimal bounds in L^2(R^2) for the maximal oper- ator obtained by taking a singular integral along N arbitrary directions in the plane. We also give a new proof for the optimal L^2 bound for the single scale Kakeya maximal function.

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