1.3.7.1 Union of Sets

The union of two sets is a set that contains all the distinct elements that are in either of the sets or in both. Mathematically, the union of sets  and  is denoted as   . A key aspect of the union is its inclusiveness. It doesn't matter if an element is in one set, the other, or both; if it's in either set, it's in the union. Another important aspect is that each element in the union is unique. Even if an element…