Parenthesis/Examples/Arbitrary Example 1

Examples of Parenthesis
Consider the following this formula of propositional logic:


 * $p \land q \lor r$

This can mean either:
 * the conjunction of $p$ with $q \lor r$

or:
 * the disjunction of $p \land q$ with $r$.

Using parenthesis, the ambiguity is removed by presenting what is required either as:


 * $p \land \paren {q \lor r}$

or:
 * $\paren {p \land q} \lor r$