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Formal decomposition of a microdifferential system at generic points - MaRDI portal

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Formal decomposition of a microdifferential system at generic points (Q1203386)

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scientific article; zbMATH DE number 118282
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English
Formal decomposition of a microdifferential system at generic points
scientific article; zbMATH DE number 118282

    Statements

    Formal decomposition of a microdifferential system at generic points (English)
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    8 February 1993
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    Soit \(X\) une variété analytique complexe et \(T^* X\to X\) son fibré cotangent. Soit \(M\) un module cohérent sur l'anneau des opérateurs microdifférentiels formels sur \(X\). Dans le cas où le support (ou variété caractéristique) de \(M\) est une hypersurface, B. Malgrange a démontré que \(M\) se décompose en systèmes élémentaires au point générique et après tensoriation par l'anneau des opérateurs microdifférentiels d'ordre \(q\)-fractionnaire avec \(q\) approprié. Dans ce travail, on généralise le résultat cité: d'abord pour un système non holonome quelconque, et ensuite pour les systèmes holonomes.
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    microdifferential systems
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    decomposition at generic points
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    microdifferential operator of fractional order
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