\varsupsetneqqThe symbol \varsupsetneqq is used in mathematical notation to denote a strict superset relationship that is not equal. It indicates that one set is a superset of another, but the two sets are not identical.
Set A is a strict superset of set B, meaning A contains all elements of B and more.
A \varsupsetneqq BThe set {1, 2, 3, 4} is a strict superset of the set {1, 2}.
\{1, 2, 3, 4\} \varsupsetneqq \{1, 2\}Set X is a strict superset of set Y, indicating X has additional elements not found in Y.
X \varsupsetneqq Y