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Smooth bundles, whose fibres are distribution spaces, are introduced according to the notion of smoothness due to Frölicher. Some fundamental notions of differential geometry, such as tangent and jet spaces, Frölicher-Nijenhuis bracket, connections and curvature, are suitably generalized. It is also shown that a classical connection on a finite-dimensional bundle naturally determines a connection on an associated distributional bundle.
Dans la première partie, nous étudions la pseudo-convexité dans les elc et montrons que, dans le cas normé comme dans le cas non normé, les diverses notions introduites coïncident. Dans la deuxième partie, nous étudions la convexité polynomiale et prouvons des théorèmes d’approximation du type Runge ou Oka-Weil.
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