Closed form

Closed form may refer to:

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

• 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