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