Ouverts stablement convexes par rapport à un opérateur différentiel. (Stably convex open sets with regard to a differential operator). (French) Zbl 0228.35014


35E99 Partial differential equations and systems of partial differential equations with constant coefficients
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[1] L. HORMANDER, Linear partial differential operators, Springer-Verlag, (1964). · Zbl 0108.09301
[2] F. TREVES, Linear partial differential equations, Gordon and Breach, (1970). · Zbl 0209.12001
[3] A. UNTERBERGER, Résolution d’équations aux dérivées partielles dans des espaces de distributions d’ordre de régularité variable, Ann. Inst. Fourier, Grenoble, t. 21, fasc. 2, (1971). · Zbl 0205.43104
[4] A. UNTERBERGER, Espaces de Sobolev d’ordre variable et applications, Séminaire Goulaouic-Schwartz, Ecole Polytechnique, Paris (1971). · Zbl 0235.35073
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