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Sur les équations différentielles multiformes et leurs intégrales singulieres. (French) Zbl 0396.34018


MSC:

34A34 Nonlinear ordinary differential equations and systems
34C05 Topological structure of integral curves, singular points, limit cycles of ordinary differential equations
57R70 Critical points and critical submanifolds in differential topology
58C25 Differentiable maps on manifolds
58K99 Theory of singularities and catastrophe theory
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