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Bourgain's analytic projection revisited
Authors:S. V. Kislyakov
Affiliation:Université Bordeaux I, Laboratoire de Mathématiques Pures, 351 cours de la Libération, F-33405 Talence Cedex 05, France - Steklov Mathematical Institute, St. Petersburg Branch, Fontanka 27, 191011 St. Petersburg, Russia
Abstract:For a positive function $w$ on the unit circle with $log win L^1$, the following two statements are equivalent: (a) $log win BMO$; (b) there is an operator $Q$ projecting $L^p(w)$ onto $H^p(w)$ for all $1<p<infty$ at once and having weak type (1,1) with respect to $w$.

Keywords:Weight   analytic decomposition of unity   analytic projection   $BMO$-regular space
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