Superset

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Given two sets A and B, then A is a superset of B if and only if B is a subset of A.

To denote the fact that A is a superset of B we write AB in this encyclopedia. (Some browsers may not be able to display this symbol, or the other superset and subset symbols used in this paragraph.) Many mathematicians write AB instead, although others use this to mean that A is a proper superset of B (that is, A is a superset of B and not equal to it). AB is equivalent to BA, and AB is equivalent to BA.


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