Odd-dimensional analogue: (M^{2n+1}, α) with α ∧ (dα)^n a volume form. Contact manifolds are boundaries of symplectic fillings; the Reeb vector field plays the role of a preferred Hamiltonian flow.
Odd-dimensional analogue: (M^{2n+1}, α) with α ∧ (dα)^n a volume form. Contact manifolds are boundaries of symplectic fillings; the Reeb vector field plays the role of a preferred Hamiltonian flow.