Phase-space area
= Phase-space area
{title2=$\oint p\,dq$}
The symplectic area enclosed by a closed orbit in a two-dimensional phase plane. With the orientation of Hamiltonian motion it is $\oint p\,dq=2\pi I$, where $I$ is the <action variable>.
= Phase-space area
{title2=$\oint p\,dq$}
The symplectic area enclosed by a closed orbit in a two-dimensional phase plane. With the orientation of Hamiltonian motion it is $\oint p\,dq=2\pi I$, where $I$ is the <action variable>.