Ce survol est divisé en trois chapitres : le premier porte sur les propriétés générales des séries de Dirichlet et de leur somme, et présente le point de vue de Bohr (relèvement). Le second étudie les espaces de Hardy-Dirichlet de telles séries sur un demi-plan vertical, avec une application aux systèmes de Riesz. Le troisième enfin porte sur les opérateurs de composition agissant sur ces espaces et leurs nombres d’approximation. Le comportement de ces nombres se révèle assez différent de ceux rencontrés dans le cas des espaces de Hardy classiques.
Mots clés : Dirichlet series, Composition operators, Approximation numbers
Hervé Queffélec 1
@article{AMBP_2015__22_S2_267_0, author = {Herv\'e Queff\'elec}, title = {Espaces de s\'eries de {Dirichlet} et leurs op\'erateurs de composition}, journal = {Annales math\'ematiques Blaise Pascal}, pages = {267--344}, publisher = {Annales math\'ematiques Blaise Pascal}, volume = {22}, number = {S2}, year = {2015}, doi = {10.5802/ambp.351}, language = {fr}, url = {https://ambp.centre-mersenne.org/articles/10.5802/ambp.351/} }
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%0 Journal Article %A Hervé Queffélec %T Espaces de séries de Dirichlet et leurs opérateurs de composition %J Annales mathématiques Blaise Pascal %D 2015 %P 267-344 %V 22 %N S2 %I Annales mathématiques Blaise Pascal %U https://ambp.centre-mersenne.org/articles/10.5802/ambp.351/ %R 10.5802/ambp.351 %G fr %F AMBP_2015__22_S2_267_0
Hervé Queffélec. Espaces de séries de Dirichlet et leurs opérateurs de composition. Annales mathématiques Blaise Pascal, Tome 22 (2015) no. S2, pp. 267-344. doi : 10.5802/ambp.351. https://ambp.centre-mersenne.org/articles/10.5802/ambp.351/
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