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Introduction to Logic: Propositional Logic, 3rd edition

Published by Pearson (October 27, 1999) © 2000

  • Howard Pospesel
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  • A print text

For freshman/sophomore-level courses on Logic, Introduction to Logic, and Deductive Logic.

Designed to make logic interesting and accessible—without sacrificing content or rigor—this classic introduction to contemporary propositional logic explains the symbolization of English sentences and develops formal-proof, truth-table, and truth-tree techniques for evaluating arguments.


1. Logic.

Introduction. Key Terms. Exercises.


2. If.

Compound Statements. Symbolizing Conditionals. Arrow Out. Exercises.


3. And.

Symbolizing Conjunctions. Ampersand In. Ampersand Out. Exercises.


4. If (Again).

Symbolizing Puzzling Conditionals. Arrow In. Exercises.


5. Not.

Symbolizing Negations. Dash In. Dash Out. Exercises.


6. Iff.

Symbolizing Biconditionals. Double Arrow In and Out. Exercises.


7. Or.

Symbolizing Disjunctions. Wedge In. Wedge Out. Exercises.


8. Résumé.

Summary. Proof Strategy. Definitions. Exercises.


9. Derived Rules.

Derived Rules 1. Exercises. Derived Rules 2. Exercises.


10. Truth Tables.

Full Truth Tables. Exercises. Brief Truth Tables. Exercises.


11. Truth Trees.

Constructing Trees. Testing Arguments. Exercises.


12. Statements.

Logical Truths. Contradictions. Contingent Statements. Exercises.


13. Logical Relations.

Entailment. Logical Equivalence. Exercises.


14. Natural Arguments.

Argument Identification. Formalization. Evaluation. Exercises.


Appendix 1. Metatheory: Soundness and Completeness of the System PL.
Appendix 2. Is Propositional Logic Reliable?
Appendix 3. Alternative Symbols.
Appendix 4. One-Sided Truth Trees.
Appendix 5. Using Proplogic.
Appendix 6. Solutions to Starred Exercises.
Index.
Proof Rules.
Truth-Tree Rules.
License Agreement.

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