Raymond smullyan (Más de 1400 resultados)

paperback. Condición: Good. Good clean copy. Minimal signs of wear.

Paperback. Condición: Fair. Now a generation of readers can be charmed and inspired by this witty, sophisticated author. This book looks at the ideas inspired by Taoism that treat a wide variety of subjects about life in general. By the author of "This Book Needs No Title" and "Alice in Puzzleland".

Paperback. Condición: Good. Now a generation of readers can be charmed and inspired by this witty, sophisticated author. This book looks at the ideas inspired by Taoism that treat a wide variety of subjects about life in general. By the author of "This Book Needs No Title" and "Alice in Puzzleland".

Condición: good. Book is in good condition and may include underlining highlighting and minimal wear. The book can also include "From the library of" labels. May not contain miscellaneous items toys, dvds, etc. . We offer 100% money back guarantee and 24 7 customer service.

Paperback. Condición: Fair. In his most popular book since THE LADY OR THE TIGER? the grand vizier of the puzzle world gives us 1001 hours of brain-teasing fun. Smullyan includes wonderful old chestnuts and some fiendishly original puzzles, 225 in all. An absolute must for all puzzle fans from the middle-school whiz to the sophisticated matematician or computer scientist.…

Paperback. Condición: Good. In his most popular book since THE LADY OR THE TIGER? the grand vizier of the puzzle world gives us 1001 hours of brain-teasing fun. Smullyan includes wonderful old chestnuts and some fiendishly original puzzles, 225 in all. An absolute must for all puzzle fans from the middle-school whiz to the sophisticated matematician or computer scientist.…

Paperback. Condición: Very Good. 1st Harvest Edition, 1998. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Paperback. Condición: Very Good. First Thus. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Paperback. Condición: Fair. First. The item might be beaten up but readable. May contain markings or highlighting, as well as stains, bent corners, or any other major defect, but the text is not obscured in any way.

Paperback. Condición: Very Good. Reissue. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Paperback. Condición: Fair. Reissue. The item might be beaten up but readable. May contain markings or highlighting, as well as stains, bent corners, or any other major defect, but the text is not obscured in any way.

Condición: good. Fast Free Shipping â" Good condition. It may show normal signs of use, such as light writing, highlighting, or library markings, but all pages are intact and the book is fully readable. A solid, complete copy that's ready to enjoy.

Condición: Good. . . Before placing your order for please contact us for confirmation on the book's binding. Check out our other listings to add to your order for discounted shipping. All orders guaranteed and ship within 24 hours.

Condición: very_good.

Condición: very_good.

Paperback. Condición: Good. Except for this preface, this study is completely self-contained. It is intended to serve both as an introduction to Quantification Theory and as an exposition of new results and techniques in analytic or cut-free methods. We use the term analytic to apply to any proof procedure which obeys the subformula principle (we think of such a procedure as analysing the formula into its successive components). Gentzen cut-free systems are perhaps the best known example of ana- lytic proof procedures. Natural deduction systems, though not usually analytic, can be made so (as we demonstrated in 3]). In this study, we emphasize the tableau point of view, since we are struck by its simplicity and mathematical elegance. Chapter I is completely introductory. We begin with preliminary material on trees (necessary for the tableau method), and then treat the basic syntactic and semantic fundamentals of propositional logic. We use the term Boolean valuation to mean any assignment of truth values to all formulas which satisfies the usual truth-table conditions for the logical connectives. Given an assignment of truth-values to all propositional variables, the truth-values of all other formulas under this assignment is usually defined by an inductive procedure. We indicate in Chapter I how this inductive definition can be made explicit-to this end we find useful the notion of a formation tree (which we discuss earlier).…

Hardcover. Condición: Very Good. With dust jacket. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Paperback. Condición: Very Good. A celebrated mathematician presents more than 200 increasingly complex problems that delve into Godels undecidability theorem and other examples of the deepest paradoxes of logic and set theory. Solutions.

Paperback. Condición: Good.

Condición: good. Gently used with minimal wear on the corners and cover. A few pages may contain light highlighting or writing, but the text remains fully legible. Dust jacket may be missing, and supplemental materials like CDs or codes may not be included. May be ex-library with library markings. Ships promptly. …

Paperback. Condición: Very Good. Characters from Wonderland and Through the Looking-Glass populate these 88 puzzles involving word play, logic and metalogic, and philosophical paradoxes. The charmingly illustrated challenges range from easy to difficult and include solutions. Fitting, Greer (ilustrador).…

Paperback. Condición: Fair. Now a generation of readers can be charmed and inspired by this witty, sophisticated author. This book looks at the ideas inspired by Taoism that treat a wide variety of subjects about life in general. By the author of "This Book Needs No Title" and "Alice in Puzzleland".

Paperback. Condición: Good. Now a generation of readers can be charmed and inspired by this witty, sophisticated author. This book looks at the ideas inspired by Taoism that treat a wide variety of subjects about life in general. By the author of "This Book Needs No Title" and "Alice in Puzzleland".

Paperback. Condición: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Paperback. Condición: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Paperback. Condición: Good. No Jacket. Missing dust jacket; Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.

Paperback. Condición: Very Good. Connecting readers with great books since 1972! Used books may not include companion materials, and may have some shelf wear or limited writing. We ship orders daily and Customer Service is our top priority.

Paperback. Condición: Fair. No Jacket. Readable copy. Pages may have considerable notes/highlighting. ~ ThriftBooks: Read More, Spend Less.

Paperback. Condición: Very Good. No Jacket. May have limited writing in cover pages. Pages are unmarked. ~ ThriftBooks: Read More, Spend Less.

Paperback. Condición: Good. No Jacket. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.