2003
DOI: 10.1017/s1474748003000082
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LA FORMULE DE PLANCHEREL POUR LES GROUPES p-ADIQUES. DAPRS HARISH-CHANDRA

Abstract: RésuméSoit G le groupe des points définis sur un corps p-adique d'un groupe réductif connexe. On définit l'espace des fonctions de Schwartz-Harish-Chandra sur G: ce sont des fonctions sur G,à valeurs complexes, qui vérifient des conditions de croissance et de lissité. La formule de Plancherel exprime les valeurs d'une telle fonction f en termes des opérateurs π(f ), où π parcourt l'ensemble des classes de représentations lisses irréductibles et tempérées de G. On démontre cette formule, ainsi que quelques résu… Show more

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Cited by 251 publications
(320 citation statements)
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“…The reduced C ⇤ -algebra C ⇤ r (G) is the completion of H(G) in the algebra of bounded linear operators on the Hilbert space L 2 (G). It follows from the work of Harish-Chandra (see [Vig,§10]) that the irreducible representations of C ⇤ r (G) can be identified with those of the Schwartz algebra of G. By [Wal,§III.7] the latter are the same as irreducible tempered G-representations. Thus we get (51) Irr(C ⇤ r (G)) = Irr temp (G), which means that C ⇤ r (G) is the correct C ⇤ -algebra to study the noncommutative geometry of the tempered dual of G. The structure of C ⇤ r (G) was described by means of the Fourier transform in [Ply].…”
Section: Equivariant K-theorymentioning
confidence: 99%
“…The reduced C ⇤ -algebra C ⇤ r (G) is the completion of H(G) in the algebra of bounded linear operators on the Hilbert space L 2 (G). It follows from the work of Harish-Chandra (see [Vig,§10]) that the irreducible representations of C ⇤ r (G) can be identified with those of the Schwartz algebra of G. By [Wal,§III.7] the latter are the same as irreducible tempered G-representations. Thus we get (51) Irr(C ⇤ r (G)) = Irr temp (G), which means that C ⇤ r (G) is the correct C ⇤ -algebra to study the noncommutative geometry of the tempered dual of G. The structure of C ⇤ r (G) was described by means of the Fourier transform in [Ply].…”
Section: Equivariant K-theorymentioning
confidence: 99%
“…The 2 in 2ds/s comes from the normalization of measures in [11] (see the last sentence of page 239 there), which [1] follows. We are also using that the various St λ,s are all pairwise distinct, and this well-known fact may be seen either from Langlands parametrization or the character of St λ,s , recalled later.…”
Section: Unramified Principal Series Componentsmentioning
confidence: 99%
“…(See [Waldspurger 2003, Section IV] for a self-contained treatment.) It is known that the matrix coefficients [Waldspurger 2003, IV.1.1] and that the degree of the denominator is bounded in terms of G only [Waldspurger 2003, IV.1.2]; see also [Shahidi 1981, Theorems 2.2.1, 2.2.2; Silberger 1979].…”
Section: The Setupmentioning
confidence: 99%
“…Fix a special maximal compact subgroup K 0 of G. For a maximal parabolic subgroup P = MU of G and a smooth irreducible representation π of M = M(F), we consider the family of induced representations I P (π, s), s ∈ ‫,ރ‬ which extend the fixed K 0 -representation I matrix coefficients of the linear operators M(s) K are rational functions of q −s , whose denominators can be controlled explicitly (see, e.g., [Waldspurger 2003, IV.1.1, IV.1.2]). In particular, their degrees are bounded independently of K and π.…”
Section: Introductionmentioning
confidence: 99%