# exact (differential form)

A differential form $\eta$ is called exact if there exists another form $\xi$ such that $d\xi=\eta$. Exact forms are always closed (http://planetmath.org/ClosedDifferentialForm), since $d^{2}=0$.

Title exact (differential form) ExactdifferentialForm 2013-03-22 13:12:24 2013-03-22 13:12:24 bwebste (988) bwebste (988) 4 bwebste (988) Definition msc 53-00 exact form exact differential form PoincareLemma TotalDifferential