Set operations
We can perform the following operations on sets:
- Union: Given two sets, this returns a new set with the elements from both given sets
- Intersection: Given two sets, this returns a new set with the elements that exist in both sets
- Difference: Given two sets, this returns a new set with all elements that exist in the first set and do not exist in the second set
- Subset: This confirms whether a given set is a subset of another set
Set union
The mathematic concept of union is that the union of sets A and B, denoted by 
, is the set defined as:
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