tailieunhanh - An Introduction to Formal Logic

The author would like to thank the people who made this project possible. Notable among these are Cristyn Magnus, who read many early drafts; Aaron Schiller, who was an early adopter and provided considerable, helpful feedback; and Bin Kang, Craig Erb, Nathan Carter, Wes McMichael, and the students of Introduction to Logic, who detected various errors in previous versions of the book. c 2005–2009 by . Magnus. Some rights reserved. You are free to copy this book, to distribute it, to display it, and to make derivative works, under the following conditions: (a) Attribution. You must give the original author credit | forall An Introduction to Formal Logic . Magnus University at Albany State University of New York logic version 090604 This book is offered under a Creative Commons license. Attribution-ShareAlike The author would like to thank the people who made this project possible. Notable among these are Cristyn Magnus who read many early drafts Aaron Schiller who was an early adopter and provided considerable helpful feedback and Bin Kang Craig Erb Nathan Carter Wes McMichael and the students of Introduction to Logic who detected various errors in previous versions of the book. 2005-2009 by . Magnus. Some rights reserved. You are free to copy this book to distribute it to display it and to make derivative works under the following conditions a Attribution. You must give the original author credit. b Share Alike. If you alter transform or build upon this work you may distribute the resulting work only under a license identical to this one. For any reuse or distribution you must make clear to others the license terms of this work. Any of these conditions can be waived if you get permission from the copyright holder. Your fair use and other rights are in no way affected by the above. This is a human-readable summary of the full license which is available on-line at http licenses by-sa Typesetting was carried out entirely in . The style for typesetting proofs is based on by Peter Selinger University of Ottawa. This copy of forally is current as of June 4 2009. The most recent version is available on-line at http logic Contents 1 What is logic 5 Arguments . 6 Sentences. 6 Two ways that arguments can go wrong. 7 Deductive validity . 8 Other logical notions. 10 Formal languages. 12 Practice Exercises . 15 2 Sentential logic 17 Sentence letters . 17 Connectives. 19 Other symbolization. 28 Sentences of SL. 29 Practice Exercises . 33 3 Truth tables 37