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Hamiltonian systems, symplectic flows, classical integrable systems

5 votes
0 answers
174 views

Are there connected closed 4-manifolds admitting a regular Almost Lagrangian distribution, a...

In the category of real differential manifolds, connected (of $ C ^ {\infty} $ class in the sequel), closed of dimension 4, is there any manifold admitting a regular Almost Lagrangian distribution and …
1 vote

Are there a geometry behind the singularity formation in solutions to nonlinear ODE's?

I think you can to look at the geometry of jet bundles, the equivalence problem a la "E. Cartan". See R. Gardner: The Equivalence Problem and Application (I don't remember well the title of the book, …
Eric Arnéo Vespira Kengne's user avatar