This means that P Q is true when both P and Q are true and also when only one of them is true. A Boolean search is particularly helpful after running an initial search. How about b c e.
The truth value of a statement is determined by the truth value s of its part s depending on the connectives.
Their use has been extended to many other meanings more or less analogous. What do you call mathematical statements a and d. When do we use. The following list of mathematical symbols by subject features a selection of the most common symbols used in modern mathematical notation within formulas grouped by mathematical topic.