Universal set question

  • Thread starter Kamataat
  • Start date
  • #1
Let's say I have to prove something about two sets and I want to make use of the notion of the universal set. Is it OK then to define the universal set as the union of these two sets?

- Kamataat

Answers and Replies

  • #4
Wouldn't you also have to union (in addition to the two sets) the intersection of the complements of the two sets?