Closed-set



noun, Mathematics.
1.
a set that contains all of its accumulation points, as the set of points on and within a circle; a set having an open set as its complement.
noun (maths)
1.
a set that includes all the values obtained by application of a given operation to its members
2.
(in topological space) a set that contains all its own limit points

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  • Closed-shelf

    noun, Library Science. 1. a library stack with access restricted to the staff of the library or to a limited group of library users. [klohzd-stak] /ˈkloʊzdˈstæk/ adjective, Library Science. 1. having access to the stacks limited to the staff of the library or to a limited group of library users.

  • Closed-shell

    noun, Physics. 1. (in atomic structure) a shell that contains the maximum number of electrons permitted by the exclusion principle. 2. (in nuclear structure) a shell that contains the maximum number of nucleons permitted by the exclusion principle.



  • Closed-shop

    noun 1. a factory, office, or other business establishment in which union membership is a condition of being hired as well as of continued employment. noun 1. (formerly) an industrial establishment in which there exists a contract between a trade union and the employer permitting the employment of the union’s members only Compare open shop, […]

  • Closed society

    noun a culture in which there is a rigid structure and little freedom or tolerance of belief, cf. open society See open society



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