Geodesic
Convergence of generalized eigenfunction expansions
Electronic Journal of Differential Equations, Tome 2007 (2007).

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: We present a simplified theory of generalized eigenfunction expansions for a commuting family of bounded operators and with finitely many unbounded operators. We also study the convergence of these expansions, giving an abstract type of uniform convergence result, and illustrate the theory by giving two examples: The Fourier transform on Hecke operators, and the Laplacian operators in hyperbolic spaces.
Classification : 46L10, 47E05, 47F05, 47B25, 11F25, 11F03
Keywords: generalized eigenfunction expansion, generalized eigenprojection, Fourier transform, differential operators, Hecke operators, modular group 
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     author = {Sakata, Mayumi},
     title = {Convergence of generalized eigenfunction expansions},
     journal = {Electronic Journal of Differential Equations},
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     volume = {2007},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a31/}
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Sakata, Mayumi. Convergence of generalized eigenfunction expansions. Electronic Journal of Differential Equations, Tome 2007 (2007). http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a31/