Superset Notation

The superset operator in set theory is denoted using the superset symbol which looks like a U turned ninety degrees counter clockwise with a horizontal line underneath.

Related Notation

A proper superset is denoted by the superset symbol which looks like a U rotated ninety degrees to the left.

The subset operator is denoted using a U shapes symbol rotated ninety degrees to the righ with a horizontal line underneath.

A proper subset is denoted by the symbol ⊂