closed set

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closed set

[¦klōzd ′set]
(mathematics)
A set of points which contains all its cluster points. Also known as topologically closed set.

closed set

(mathematics)
A set S is closed under an operator * if x*y is in S for all x, y in S.
References in periodicals archive ?
The left P'-invariant closed subsets of G/P are described in the following Hasse diagram.
Let X, Y be real Banach spaces and V be a nonempty closed subset of X such that RV [subset or equal to] V.
Given a pretopological space (E, a), call the closure of A, when it exists, the smallest closed subset of (E, a) which contains A.
b) f(X) is a closed subset of X and F(X x X) [subset or equal to] g(X).
2 Let W be a closed subset of a smooth manifold M which has been decomposed into a finite union of locally closed subsets
Assume that T is a nonempty closed subset of R and E is an equivalence relation on T.
A filter on X is said to be closed if it has a base consisting of closed subsets of X.
0] are equal to the nonempty irreducible Zariski closed subset T of [Mathematical Expression Omitted].
the direct image of a weak* closed subset of K is weak* closed in [l.
Let F be a neutrosophic closed subset of Ncl(A)--A.
0]) is nonempty, closed subset of X, and for each open set U of X containing F([x.