closed form

plural closed forms

1. countableuncountablemathematicsA form (expression) that does not use limits, implicitly or explicitly.

   There is no known representation of π in closed form: each expression for it includes an integral, an infinite series, or an infinite continued fraction.

2. countableuncountablemathematicsA differential form whose exterior derivative is zero.
3. countableuncountablecommunicationsA type of poetry with regular structure, such as meter or a rhyming pattern.
4. countableuncountablecommunicationsTrobar clus.
5. countableuncountableUsed other than figuratively or idiomatically: see closed, form.

   If ω is a closed form, then dω=0.