Sweet ReasonA Field Guide to Modern Logic
Sweet Reason: A Field Guide to Modern Logic, 2nd Edition offers an innovative, friendly, and effective introduction to logic. It integrates formal first order, modal, and non-classical logic with natural language reasoning, analytical writing, critical thinking, set theory, and the philosophy of logic and mathematics. An innovative introduction to the field of logic designed to entertain as it informs Integrates formal first order, modal, and non-classical logic with natural language reasoning, analytical writing, critical thinking, set theory, and the philosophy of logic and mathematics Addresses contemporary applications of logic in fields such as computer science and linguistics A web-site (www.wiley.com/go/henle) linked to the text features numerous supplemental exercises and examples, enlightening puzzles and cartoons, and insightful essays
Preface xi What Is Logic? 1 Chapter One 3 1.1 Introducing Formal Logic 4 1.2 Constants and Relations 7 1.3 Quantifiers and Variables 9 1.4 Introducing Informal Logic 11 1.5 Conclusions 13 1.6 Dialects of Logic 15 Chapter Two 18 2.1 Formal Inference 19 2.2 Informal Inference 21 2.3 Diagramming Arguments 25 2.4 Saying No 32 2.5 Metalogic 35 Chapter Three 37 3.1 Basic Sentential 37 3.2 Truth Tables 43 3.3 English to Sentential 50 3.4 Negating Statements 56 3.5 Rebutting Premises 59 3.6 Computer Logic 65 Chapter Four 69 4.1 Validity 69 4.2 The Logic of English 73 4.3 Negating Conditionals 76 4.4 Rebutting Inferences 80 4.5 The Logic of Sets 87 Chapter Five 94 5.1 Well-formed Formulas 94 5.2 The Shortcut Method 101 5.3 Local and Global 108 5.4 More on Trees 111 5.5 Rebutting Everything 115 5.6 Polish Logic 122 Chapter Six 129 6.1 Predicate 130 6.2 English to Predicate 139 6.3 Reading Between the Lines 145 6.4 Multi-valued Logic 153 Chapter Seven 162 7.1 Universes 162 7.2 Syllogisms 167 7.3 Validity 172 7.4 Diagramming Your Argument 176 7.5 Inductive Logic 187 Chapter Eight 192 8.1 Predicate Wffs 192 8.2 Outlining Your Argument 196 8.3 The Logic of Chance 205 Chapter Nine 213 9.1 Simple Deduction 213 9.2 Simple Strategy 221 9.3 Writing Your Argument 227 9.4 Basic Modal Logic 234 Chapter Ten 240 10.1 Sentential Deduction 240 10.2 Sentential Strategy 250 10.3 Arguing with Yourself 263 10.4 Sophisticated Modal Logic 279 Chapter Eleven 287 11.1 Predicate Deduction 287 11.2 Predicate Strategy 296 11.3 Why We Argue 306 11.4 Presidential Debating 310 11.5 The Logic of Paradox 315 Chapter Twelve 327 12.1 Deduction with Identity 327 12.2 Deduction, FMTYEWTK 332 12.3 Parliamentary Debating 336 12.4 Cathy, A Decade On 338 12.5 Incomplete Logic 343 What is Logic? 349 Answers to Odd-Numbered Exercises 350 Index 384
James M. Henle is Professor of Mathematics at Smith College. His books include Calculus: the Language of Change (with David Cohen), Infinitesimal Calculus (with Eugene Kleinberg), and An Outline of Set Theory. Jay L. Garfield is Doris Silbert Professor in the Humanities and Professor of Philosophy at Smith College, Professor in the Graduate Faculty of Philosophy at the University of Massachusetts, Professor of Philosophy at Melbourne University, and Adjunct Professor of Philosophy at the Central University of Tibetan Studies. Thomas Tymoczko was, until his death, Professor of Philosophy at Smith College. He was editor of New Directions in the Philosophy of Mathematics.
What exactly is "logic," and how does it work in the real world? Sweet Reason: A Field Guide to Modern Logic, 2nd Edition offers an innovative introduction to the field of logic in all its guises - one that integrates formal first order, modal, and nonclassical logic with natural language reasoning, analytical writing, critical thinking, set theory, and the philosophy of logic and mathematics. Designed to entertain as it informs, this nontraditional yet highly effective approach allows for a richer insights and a deeper understanding of the myriad principles of logic. Contemporary applications of logic in fields such as computer science and linguistics are also addressed. To further enhance clarity, a website linked to the text features numerous supplemental exercises and examples, enlightening puzzles and cartoons, and insightful essays on history, philosophy, mathematics, computing, linguistics, and religion. Sweet Reason brings the discipline of logic into sharp focus as a field of inquiry, not just a body of technique.
Sweet Reason pulls off the impossible: it provides a fun-to-read but also competent introduction to logic. Students in any discipline will find the text to be an intriguing first course in logical theory. J.C. Beall, University of Connecticut and University of Otago Introductory logic books are a dime a dozen. But this one's different. No, really. With a unique combination of philosophical nous, paradox, humor, and - often provocative - exercises, it teaches the elements of both formal logic and critical reasoning. And it shows logic as a living, breathing, evolving, stimulating, subject. If you don't want to get interested in logic, don't use this book. Graham Priest, City University of New York Graduate Center This extraordinary book, refined over the years in a very successful course at Smith College, is unique in scope among introductory logic texts, beginning with critical thinking, moving through a first-rate treatment of standard propositional and predicate logic, and introducing students along the way to a variety of more advanced topics, including modal logic, many-valued logics, set theory, cardinal and ordinal arithmetic, the logic of probability, and the logic of paradox. John Horty, University of Maryland
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