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In mathematical analysis, many generalizations of Fourier series have proved to be useful. They are all special cases of decompositions over an orthonormal basis of an inner product space. Here we consider that of square-integrable functions defined on an interval of the real line, which is important, among others, for interpolation theory.

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  • In mathematical analysis, many generalizations of Fourier series have proved to be useful. They are all special cases of decompositions over an orthonormal basis of an inner product space. Here we consider that of square-integrable functions defined on an interval of the real line, which is important, among others, for interpolation theory. (en)
  • En analyse, plusieurs extensions du concept de série de Fourier se sont montrées utiles. Elles permettent ainsi d'écrire des décompositions de fonctions sur une base hilbertienne liée à un produit scalaire particulier.Le cas considéré est celui de fonctions de carré intégrable sur un intervalle de la droite réelle, ce qui a des applications, par exemple, en théorie de l'interpolation. (fr)
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  • In mathematical analysis, many generalizations of Fourier series have proved to be useful. They are all special cases of decompositions over an orthonormal basis of an inner product space. Here we consider that of square-integrable functions defined on an interval of the real line, which is important, among others, for interpolation theory. (en)
  • En analyse, plusieurs extensions du concept de série de Fourier se sont montrées utiles. Elles permettent ainsi d'écrire des décompositions de fonctions sur une base hilbertienne liée à un produit scalaire particulier.Le cas considéré est celui de fonctions de carré intégrable sur un intervalle de la droite réelle, ce qui a des applications, par exemple, en théorie de l'interpolation. (fr)
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  • Generalized Fourier series (en)
  • Série de Fourier généralisée (fr)
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