A theorem about three quadratic forms

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Authors
Dragičević, Oliver
Treil, Sergei
Volberg, Alexander
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Abstract
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We prove a self-improvement property regarding quadratic forms on arbitrary vector spaces. We discuss several consequences of this result, in particular those concerning dimension-free L^p estimates of certain singular integral operators (Riesz transforms).
Comment: 5 pages
Keywords
Mathematics - Functional Analysis, 15A63, 42B20
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