... mean the same thing! Fortunately questions of childrearing aren’t part of mathematics or computer science (at least not this kind of question!). In mathematics and computer science, we adopt the ... as we have two different kinds of “ors,” ∨ and ⊕.Fortunately, theonly kinds of conditional statements we need for doing mathematics and computer science are “implies” and “ifand only if.”92 ... standing for “and,”• the symbol ∨, standing for “or,”• the symbol ⊕ standing for “exclusive or,”• the symbol ¬, standing for “not,”3.1. EQUIVALENCE AND IMPLICATION 93• the symbol ⇒, standing for...