Let $(M, \omega)$ be a symplectic manifold. A vector field $V: M \to TM$ is Liouville if $L_{X}
\omega=\omega$. The existence of a Liouville vector field implies that $(M, \omega)$ is exact: the one-form $\lambda = i_V \omega$ satisfies $d\lambda=d\circ i_V\omega = L_V\omega=\omega$. In particula...
@MartinSleziak deleted-tag The tag cubic-graphs is gone. It is not shown in the revision history, so it was most likely removed by a script. (Single occurrence tag, older than 6 months.)
