2 problems

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Connectedness conjecture for the source fibers of presymplectic groupoids
Connectedness conjecture. Theorem 1 holds also when the $s$ -fibers are not connected.
openpoisson-geometry presymplectic-geometry symplectic-groupoids
04
The contact-form existence problem for odd-dimensional manifolds with non-degenerate two-forms
Contact-form existence problem. Does $M$ admit a contact form?
opencontact-topology presymplectic-geometry
04