In mathematics, a set is a collection of distinct objects, considered as an object in its own right. Objects of a set are called elements.
There are several fundamental operations for constructing new sets from given sets:
- Union: U
- Intersection: ∩
- Difference: \
- Symmetric difference: △
Priority of operations:
- U
- ∩, \, △
Operations with equal priority are performed from the left to the right.