## A Modern Logistic: The Theory of Logical Thought |

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### Contents

The Meaning of Logic | 1 |

Language and Logic | 9 |

Truth Validity and Proof | 15 |

Copyright | |

19 other sections not shown

### Common terms and phrases

affirmative analysis analytic definition antecedent argument assertion basic Carnap certitude class calculus class of logicians class product classical concepts conclusion conjunction consequent construction contemporary logic contradiction deductive system defined definiendum Demonstration disjunction distribution of terms example EXERCISES for Chapter existential import explained explicandum expression F F F F T F fact formula fx D gx fx.gx given Hence illustrate introduced Jones Kneale language linguistic logical class logical conjunction logical constant logician material equivalence material implication meaning ment merely modern logic notation null class Number obversion particular philosophers possible postulates precise predicate term principle probability statements proper propositional calculus quantifier question raining reasoning relation rules sense sentence Setonians signifies Square of Opposition structure student subject class substitution syllogism syllogistic symbol tautological theorem thing tion Toulmin traditional logic truth functions truth table truth value truth-functional usage valid Venn diagrams verbal definition words