Closed Form Meaning
(mathematics) A form (expression) that does not use limits, implicitly or explicitly.
Example: There is no known representation of Ï€ in closed form: each expression for it includes an integral, an infinite series, or an infinite continued fraction.
Used other than as an idiom: see closed,â€Ž form.
If Ï‰ is a closed form, then dÏ‰=0.