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"Ce livre part de l'équation de la chaleur de Joseph Fourier (1807) pour aboutir à la très récente théorie des ondelettes. Dans la première partie, rédigée par Jean-Pierre Kahane, on voit défiler Fourier, Dirichlet, Riemann, Cantor, Lebesgue, et se développer des notions fondamentales de l'analyse, à commencer par la notion moderne de fonction, à l'occasion de l'étude des séries de Fourier. Dans la seconde, rédigée par Pierre Gilles Lemarié-Rieusset, un bref exposé historique conduit à un véritable traité de la théorie moderne des ondelettes, l'outil le plus récent de l'analyse harmonique. La première partie, sans s'interdire l'actualité, a un caractère historique, et fait une grande place à des extraits d'oeuvres marquantes. La seconde partie, dont le contenu intéresse les physiciens et les ingénieurs autant que les mathématiciens, peut être lue indépendamment. Leur juxtaposition est tout à fait naturelle. Après une longue période d'incompréhension ou de réticence à l'égard de la démarche de Fourier, celui-ci apparaît aujourd'hui, avec la transformée de Fourier rapide, la théorie du signal, les ondelettes, comme un précurseur dans la recherche de méthodes puissantes et efficaces pour le traitement de questions diverses issues de l'étude de la nature ou de la technique. Ainsi la théorie analytique de la chaleur et le développement d'une fonction en harmoniques, à la Fourier, rejoignent les problèmes actuels de la physique théorique, de l'analyse d'images et des télécommunications, justiciables du traitement par ondelettes." [Quatrième de couverture]

Fourier, Analyse de --- Ondelettes --- Fourier, Séries de --- Fourier analysis --- Wavelets (Mathematics) --- Fourier series. --- Histoire. --- History.

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Using a codimension-1 algebraic cycle obtained from the Poincaré line bundle, Beauville defined the Fourier transform on the Chow groups of an abelian variety A and showed that the Fourier transform induces a decomposition of the Chow ring mathrm{CH}^*(A). By using a codimension-2 algebraic cycle representing the Beauvilleâe"Bogomolov class, the authors give evidence for the existence of a similar decomposition for the Chow ring of Hyperkähler varieties deformation equivalent to the Hilbert scheme of length-2 subschemes on a K3 surface. They indeed establish the existence of such a decomposition for the Hilbert scheme of length-2 subschemes on a K3 surface and for the variety of lines on a very general cubic fourfold.

Fourier transformations. --- Kählerian manifolds.

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This is the first book to present a complete characterization of Stein-Tomas type Fourier restriction estimates for large classes of smooth hypersurfaces in three dimensions, including all real-analytic hypersurfaces. The range of Lebesgue spaces for which these estimates are valid is described in terms of Newton polyhedra associated to the given surface.Isroil Ikromov and Detlef Müller begin with Elias M. Stein's concept of Fourier restriction and some relations between the decay of the Fourier transform of the surface measure and Stein-Tomas type restriction estimates. Varchenko's ideas relating Fourier decay to associated Newton polyhedra are briefly explained, particularly the concept of adapted coordinates and the notion of height. It turns out that these classical tools essentially suffice already to treat the case where there exist linear adapted coordinates, and thus Ikromov and Müller concentrate on the remaining case. Here the notion of r-height is introduced, which proves to be the right new concept. They then describe decomposition techniques and related stopping time algorithms that allow to partition the given surface into various pieces, which can eventually be handled by means of oscillatory integral estimates. Different interpolation techniques are presented and used, from complex to more recent real methods by Bak and Seeger.Fourier restriction plays an important role in several fields, in particular in real and harmonic analysis, number theory, and PDEs. This book will interest graduate students and researchers working in such fields.

Hypersurfaces. --- Polyhedra. --- Surfaces, Algebraic. --- Fourier analysis.

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Fourier transformations --- Algebras, Linear --- Signal processing --- Wavelets (Mathematics)

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The present volume develops the theory of integration in Banach spaces, martingales and UMD spaces, and culminates in a treatment of the Hilbert transform, Littlewood-Paley theory and the vector-valued Mihlin multiplier theorem. Over the past fifteen years, motivated by regularity problems in evolution equations, there has been tremendous progress in the analysis of Banach space-valued functions and processes.  The contents of this extensive and powerful toolbox have been mostly scattered around in research papers and lecture notes. Collecting this diverse body of material into a unified and accessible presentation fills a gap in the existing literature. The principal audience that we have in mind consists of researchers who need and use Analysis in Banach Spaces as a tool for studying problems in partial differential equations, harmonic analysis, and stochastic analysis. Self-contained and offering complete proofs, this work is accessible to graduate students and researchers with a background in functional analysis or related areas.

Fourier analysis. --- Measure theory. --- Partial differential equations. --- Probabilities. --- Functional analysis. --- Fourier Analysis. --- Measure and Integration. --- Partial Differential Equations. --- Probability Theory and Stochastic Processes. --- Functional Analysis.