## A Modern Introduction to Logic |

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abstraction analogy analysis argument Aristotle assert assumption asymmetrical relation axioms believe Bertrand Russell C. D. Broad called causal cause Chap Chapter characteristics conception concerned conclusion connexion connotation connotation and denotation consider constituents contradictory contraposition deductive system defined definition demonstrative descriptive phrase determine discussion disjunctive distinction distinguish dyadic relations equivalent example experience expressed fact factors false follows formal Hence hypothesis implies important induction instance interpretation involves J. M. Keynes Keynes kind language laws logical logical conjunctions major premiss mathematical means Mill Mill's mode nature non-P notion object observed occur ordinary proper name possible precise predicate principle problem properties propositional function reasoning recognize reference referend regard relation relevant Russell scientific method scientist sense simple propositions Socrates stand statement supposed syllogism symbols theory things tion traditional Logicians true universal universal propositions universe of discourse valid variable word