What is OR operation? Or operational interpretation

1.？ In mathematical logic? Or? Operation is a kind of propositional calculus, for example, proposition? 3? 2? Is it by? 3 & gt2? And then what? 3 = 2? A complex proposition consisting of two simple propositions, namely? 3>2 or 3 = 2? .

2. In the set theory? Or? Operation is to find the union of two sets. That is, the set consisting of all elements of set A or set B is called the union of set A and set B, and is recorded as? B.