Logic Matters

Logic Matters PDF

Author: P. T. Geach

Publisher: Univ of California Press

Published: 1980-04-30

Total Pages: 356

ISBN-13: 9780520038479

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"This is a significant and ofren rather demanding collection of essays. It is an anthology purring together the uncollected works of an important twentieth-century philosopher. Many of the articles treat one or another of the more important issues considered by analytic philosophers during the last quarter-century. Of significant importance to philosophers interested in researching the many topics contained in Logic Matters is the inclusion in this anthology of a rather extensive eight-page name-topic index."--Thomist "The papers are arranged by topic: Historical Essays, Traditional Logic, Theory of Reference and Syntax, Intentionality, Quotation and Semantics, Set Theory, Identity Theory, Assertion, Imperatives and Practical Reasoning, Logic in Metaphysics and Theology. The broad range of issues that have engaged Geach's complex and systematic reasoning is impressive. In addition to classical logic, topics in ethics, ontology, and even the logic of religious dogmas are tackled .... the work in this collection is more brilliant and ingenious than it is difficult and demanding."--Philosophy of Science "Geach displays his mastery of applying logical techniques and concepts to philosophical questions. Compared with most works in philosophical logic this book is remarkable for its range of topics. Plato, Aristotle, Aquinas, Russell, Wittgenstein, and Quine all figure prominently. Geach's style is remarkably lively considering the rightly argued matter. Although some of the articles treat rather technical questions in mathematical logic, most are accessible to philosophers with modest backgrounds in logic." --Choice

An Introduction to Proof Theory

An Introduction to Proof Theory PDF

Author: Paolo Mancosu

Publisher: Oxford University Press

Published: 2021

Total Pages: 431

ISBN-13: 0192895931

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An Introduction to Proof Theory provides an accessible introduction to the theory of proofs, with details of proofs worked out and examples and exercises to aid the reader's understanding. It also serves as a companion to reading the original pathbreaking articles by Gerhard Gentzen. The first half covers topics in structural proof theory, including the Gödel-Gentzen translation of classical into intuitionistic logic (and arithmetic), natural deduction and the normalization theorems (for both NJ and NK), the sequent calculus, including cut-elimination and mid-sequent theorems, and various applications of these results. The second half examines ordinal proof theory, specifically Gentzen's consistency proof for first-order Peano Arithmetic. The theory of ordinal notations and other elements of ordinal theory are developed from scratch, and no knowledge of set theory is presumed. The proof methods needed to establish proof-theoretic results, especially proof by induction, are introduced in stages throughout the text. Mancosu, Galvan, and Zach's introduction will provide a solid foundation for those looking to understand this central area of mathematical logic and the philosophy of mathematics.

Forever Undecided

Forever Undecided PDF

Author: Raymond M. Smullyan

Publisher: Knopf

Published: 2012-07-04

Total Pages: 286

ISBN-13: 0307962466

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Forever Undecided is the most challenging yet of Raymond Smullyan’s puzzle collections. It is, at the same time, an introduction—ingenious, instructive, entertaining—to Gödel’s famous theorems. With all the wit and charm that have delighted readers of his previous books, Smullyan transports us once again to that magical island where knights always tell the truth and knaves always lie. Here we meet a new and amazing array of characters, visitors to the island, seeking to determine the natives’ identities. Among them: the census-taker McGregor; a philosophical-logician in search of his flighty bird-wife, Oona; and a regiment of Reasoners (timid ones, normal ones, conceited, modest, and peculiar ones) armed with the rules of propositional logic (if X is true, then so is Y). By following the Reasoners through brain-tingling exercises and adventures—including journeys into the “other possible worlds” of Kripke semantics—even the most illogical of us come to understand Gödel’s two great theorems on incompleteness and undecidability, some of their philosophical and mathematical implications, and why we, like Gödel himself, must remain Forever Undecided!

Logic

Logic PDF

Author: Nicholas J.J. Smith

Publisher: Princeton University Press

Published: 2012-04

Total Pages: 544

ISBN-13: 0691151636

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Provides an essential introduction to classical logic.

An Introduction to Formal Logic

An Introduction to Formal Logic PDF

Author: Peter Smith

Publisher: Cambridge University Press

Published: 2003-11-06

Total Pages: 370

ISBN-13: 9780521008044

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Formal logic provides us with a powerful set of techniques for criticizing some arguments and showing others to be valid. These techniques are relevant to all of us with an interest in being skilful and accurate reasoners. In this highly accessible book, Peter Smith presents a guide to the fundamental aims and basic elements of formal logic. He introduces the reader to the languages of propositional and predicate logic, and then develops formal systems for evaluating arguments translated into these languages, concentrating on the easily comprehensible 'tree' method. His discussion is richly illustrated with worked examples and exercises. A distinctive feature is that, alongside the formal work, there is illuminating philosophical commentary. This book will make an ideal text for a first logic course, and will provide a firm basis for further work in formal and philosophical logic.

Logic for Philosophy

Logic for Philosophy PDF

Author: Theodore Sider

Publisher: Oxford University Press

Published: 2010-01-07

Total Pages: 305

ISBN-13: 0192658816

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Logic for Philosophy is an introduction to logic for students of contemporary philosophy. It is suitable both for advanced undergraduates and for beginning graduate students in philosophy. It covers (i) basic approaches to logic, including proof theory and especially model theory, (ii) extensions of standard logic that are important in philosophy, and (iii) some elementary philosophy of logic. It emphasizes breadth rather than depth. For example, it discusses modal logic and counterfactuals, but does not prove the central metalogical results for predicate logic (completeness, undecidability, etc.) Its goal is to introduce students to the logic they need to know in order to read contemporary philosophical work. It is very user-friendly for students without an extensive background in mathematics. In short, this book gives you the understanding of logic that you need to do philosophy.

The Logic of Intelligence Analysis

The Logic of Intelligence Analysis PDF

Author: Karl Spielmann

Publisher: Routledge

Published: 2018-06-12

Total Pages: 120

ISBN-13: 0429891881

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This book discusses the application of hypothesis testing to the practice of intelligence analysis. By drawing on longstanding procedures of scientific method, particularly hypothesis testing, this book strongly critiques standard intelligence analytic practices. It shows these practices to be inadequate, as they are illogical in terms of what formal philosophy says any intelligence analysts can realistically be expected to know, and for the future when analysts will face pressures to adapt to digital age modeling techniques. The methodology focuses on identifying and remedying analytic errors caused by analyst cognitive biases and by foreign denial and deception. To demonstrate that it is a practical tool, it walks analysts through a case study, step by step, to show how its hypothesis testing can be implemented. It also invites a comparative test in the real world with any other intelligence methodologies to assess its strengths and weaknesses in predicting the outcome of an actual "live" intelligence issue. This book will be of much interest to students of intelligence studies, public policy and national security, as well as practitioners.

A First Course in Logic

A First Course in Logic PDF

Author: Shawn Hedman

Publisher: OUP Oxford

Published: 2004-07-08

Total Pages: 452

ISBN-13: 0191586773

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The ability to reason and think in a logical manner forms the basis of learning for most mathematics, computer science, philosophy and logic students. Based on the author's teaching notes at the University of Maryland and aimed at a broad audience, this text covers the fundamental topics in classical logic in an extremely clear, thorough and accurate style that is accessible to all the above. Covering propositional logic, first-order logic, and second-order logic, as well as proof theory, computability theory, and model theory, the text also contains numerous carefully graded exercises and is ideal for a first or refresher course.

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