Closed form

Closed form may refer to:

Mathematics

 * Closed-form expression, a finitary expression
 * Closed differential form, a differential form $$\alpha$$ whose exterior derivative $$d\alpha$$ is the zero form $$0$$, meaning $$d\alpha = 0$$.

Poetry

 * In poetry analysis, a type of poetry that exhibits regular structure, such as meter or a rhyming pattern
 * Trobar clus, an allusive and obscure style adopted by some 12th-century troubadours