proper subset

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English - Turkish
(Bilgisayar) kapsanır
(Matematik) astküme
English - English
Of a set, a set that is a subset of the set but not equal to it

{2, 4, 5} is a proper subset of {1, 2, 3, 4, 5}, but {1, 2, 3, 4, 5} is not.