proper subset
English
![](Images/wiktionary/Venn_A_subset_B.svg.png.webp)
Euler diagram showing A is a proper subset of B, A⊂B, and conversely B is a proper superset of A.
Noun
proper subset (plural proper subsets)
- (set theory) 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.
Hypernyms
- subset
Translations
a set that is a subset of but not equal to another set
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References
proper subset on Wikipedia.Wikipedia