Definition from Wiktionary, the free dictionary
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closed (not comparable)
- Sealed, made inaccessible or impassable; not open
- (of a store or business) Not operating or conducting trade
- Not public.
- closed source
- a closed committee
- (topology, of a set) Having an open complement.
- (mathematics, of a set) Such that its image under the specified operation is contained in it.
- The set of integers is closed under addition: .
- (mathematics, logic, of a formula) Lacking a free variable.
not operating or conducting trade
having an open complement
in mathematics, such that its image under the specified operation is contained in it
lacking a free variable
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Translations to be checked: "in mathematics"
- simple past tense and past participle of