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Décroissance rapide de la distribution $f^&lgr;$

Published online by Cambridge University Press:  04 December 2007

D. BARLET
Affiliation:
Université H. Poincaré/CNRS/INRIA, Institut E. Cartan URM 9973, Boîte postale 239, F-54506 Vandoeuvre-les-Nancy, France; e-mail: barlet@iecn.u-nancy.fr
H.-M. MAIRE
Affiliation:
Section de Mathématiques, Université de Genè, Case postale 240, CH-1211 Genève 24; e-mail: maire@ibm.unige.ch
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Abstract

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Let X be an open subset of C$^n$ and (f$_1$, …,f$_p$): X → C$^p$ be a holomorphic mapping. We prove that if (x$^0$,0, λ$^0$) ∈ T$^*$ × C$^p$ does not belong to the characteristic variety of the D$_X$ [λ]-module D$_X$[λ]f$^&lgr;$, then there exists a conic neighborhood V × Γ of (x$^0$, λ$^0$) such the function (λ$_1$, …, λ$_p$) [map ] ∫ | f$_1$ |$^lgr_1$ … | f$_p$ | $^lgr_p$ ω is rapidely decreasing in | Im λ | for λ ∈ Γ with Re λ bounded, for any (n,n)-form ω of class C$^∞$ with compact support in V. The following partial converse of this result is also established: if s [map ] ∫$_f=s$ φ is of class C$^∞$ in C$^p$ for all (n,n)-forms φ of class C$^∞$ with compact support in X, then d f$_1$ ∧ … ∧ d f$_p$ (x) ≠ 0, ∀ x ∈ X.

Type
Research Article
Copyright
© 1998 Kluwer Academic Publishers