Textbook of Logic

Contents Preface. I 1. Introduction. 2. Function and uses of language. 3 (a). Proposition traditional account. (b). Modern logicians treatment of categorical propositions. 4. Terms. 5. Square and opposition. 6. Immediate inference (education). 7 (a). Categorical syllogism. (b). Validity of categorical syllogism traditional method. (c). Validity of categorical syllogism by modern method. (d). Non categorical syllogism. 8. Laws of thought. II 9. Symbolic logic its nature and character. 10. Symbolization. 11. Truth function. 12. Truth table method as decision procedure. 13. Shorter truth table method (reductio ad absurdum or indirect method). 14. Formal proof of validity. 15 (a). Predicate calculus. (b). Validity. (c). Invalidity. III 16. Induction. 17. Causation. 18. J.S. Mill's Experimental Methods. 19. Hypothesis. IV 20. Informal fallacies. Select bibliography. The present book is the fourth enlarged edition of the earlier book A Textbook of Logic An Introduction. The current edition includes an additional chapter on uses of language and its functions. Like the earlier book the present book sets forth the principles and procedures of elementary logic in the most simplified way and is specifically designed and intended for the use of students. It contains almost all the main topics on deductive inductive and symbolic logic prescribed in the syllabi of different universities in the country. The book attempts to present a clear perspective on logic as a science of correct reasoning. In the introductory chapter the aim of logic and the task of a logician are elaborated. All the topics are explained with the topics are explained with the help of diagrams and lucid examples. Each chapter is followed by plenty of exercises for the benefit of students. 348 pp.…