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THE NATURE OF LOGIC I
DEFINITION AND DIVISION
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affirmative ambiguity analogical induction analysis antecedent applied argue Aristotelian Aristotle assert axioms chap conclusion conditional proof conjunction consequent Consider construction contradiction contradictory contraposition defined derived differentia distributed division effect example existential explicative F F F F T F fallacy figure following argument Formal Logic formula Fx D Gx genus give given hypothetical immediate inference imply indicate individual induction by simple Introduction to Logic invalid language logicians major premise material equivalence material implication mathematics meaning middle term minor negation negative non-P Observe obversion original p v q particular philosophy predicate calculus predicate term principle probability propositional calculus propositional expression prove quantifier reference regarded relation represent rules of inference simple enumeration Socrates sorites stipulative definition student syllogism Symbolic Logic tautology Theorem thing tion true or false truth or falsity truth table truth values truth-function universal proposition values in column Venn diagrams weak disjunction words