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

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