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Prologue. Acknowledgments. Part I: The Goedelian Symphony. 1 Foundations and Paradoxes. 1 "This sentence is false". 2 The Liar and Goedel. 3 Language and metalanguage. 4 The axiomatic method, or how to get the non-obvious out of the obvious. 5 Peano's axioms . 6 and the unsatisfied logicists, Frege and Russell. 7 Bits of set theory. 8 The Abstraction Principle. 9 Bytes of set theory. 10 Properties, relations, functions, that is, sets again. 11 Calculating, computing, enumerating, that is, the notion of algorithm. 12 Taking numbers as sets of sets. 13 It's raining paradoxes. 14 Cantor's diagonal argument. 15 Self-reference and paradoxes. 2 Hilbert. 1 Strings of symbols. 2 " in mathematics there is no ignorabimus". 3 Goedel on stage. 4 Our first encounter with the Incompleteness Theorem . 5 and some provisos. 3 Goedelization, or Say It with Numbers! 1 TNT. 2 The arithmetical axioms of TNT and the "standard model" N. 3 The Fundamental Property of formal systems. 4 The Goedel numbering . 5 and the arithmetization of syntax. 4 Bits of Recursive Arithmetic . 1 Making algorithms precise. 2 Bits of recursion theory. 3 Church's Thesis. 4 The recursiveness of predicates, sets, properties, and relations. 5 And How It Is Represented in Typographical Number Theory. 1 Introspection and representation. 2 The representability of properties, relations, and functions . 3 and the Goedelian loop. 6 "I Am Not Provable". 1 Proof pairs. 2 The property of being a theorem of TNT (is not recursive!) 3 Arithmetizing substitution. 4 How can a TNT sentence refer to itself? 5 6 Fixed point. 7 Consistency and omega-consistency. 8 Proving G1. 9 Rosser's proof. 7 The Unprovability of Consistency and the "Immediate Consequences" of G1 and G2. 1 G2. 2 Technical interlude. 3 "Immediate consequences" of G1 and G2. 4 Undecidable1 and undecidable2. 5 Essential incompleteness, or the syndicate of mathematicians. 6 Robinson Arithmetic. 7 How general are Goedel's results? 8 Bits of Turing machine. 9 G1 and G2 in general. 10 Unexpected fish in the formal net. 11 Supernatural numbers. 12 The culpability of the induction scheme. 13 Bits of truth (not too much of it, though). Part II: The World after Goedel. 8 Bourgeois Mathematicians! The Postmodern Interpretations. 1 What is postmodernism? 2 From Goedel to Lenin. 3 Is "Biblical proof" decidable? 4 Speaking of the totality. 5 Bourgeois teachers! 6 (Un)interesting bifurcations. 9 A Footnote to Plato. 1 Explorers in the realm of numbers. 2 The essence of a life. 3 "The philosophical prejudices of our times". 4 From Goedel to Tarski. 5 Human, too human. 10 Mathematical Faith. 1 "I'm not crazy!" 2 Qualified doubts. 3 From Gentzen to the Dialectica interpretation. 4 Mathematicians are people of faith. 11 Mind versus Computer: Goedel and Artificial Intelligence. 1 Is mind (just) a program? 2 "Seeing the truth" and "going outside the system". 3 The basic mistake. 4 In the haze of the transfinite. 5 "Know thyself": Socrates and the inexhaustibility of mathematics. 12 Goedel versus Wittgenstein and the Paraconsistent Interpretation. 1 When geniuses meet . 2 The implausible Wittgenstein. 3 "There is no metamathematics". 4 Proof and prose. 5 The single argument. 6 But how can arithmetic be inconsistent? 7 The costs and benefits of making Wittgenstein plausible. Epilogue. References. Index.

Francesco Berto teaches logic, ontology, and philosophy of mathematics at the universities of Aberdeen in Scotland, and Venice and Milan-San Raffaele in Italy. He holds a Chaire d'Excellence fellowship at CNRS in Paris, where he has taught ontology at the Ecole Normale Superieure, and he is a visiting professor at the Institut Wiener Kreis of the University of Vienna. He has written papers for American Philosophical Quarterly, Dialectica, The Philosophical Quarterly, the Australasian Journal of Philosophy, the European Journal of Philosophy, Philosophia Mathematica, Logique et Analyse, and Metaphysica, and runs the entries Dialetheism and Impossible Worlds in the Stanford Encyclopedia of Philosophy. His book How to Sell a Contradiction has won the 2007 Castiglioncello prize for the best philosophical book by a young philosopher.

#### Reviews

"This is a beautifully clear and accurate presentation of the material, with no technical demands beyond what is required for accuracy, and filled with interesting philosophical suggestions." (John Woods, University of British Columbia) "There's Something about Godel is a bargain: two books in one. The first half is a gentle but rigorous introduction to the incompleteness theorems for the mathematically uninitiated. The second is a survey of the philosophical, psychological, and sociological consequences people have attempted to derive from the theorems, some of them quite fantastical." (Philosophia Mathematica, 2011) "There is a story that in 1930 the great mathematician John von Neumann emerged from a seminar delivered by Kurt Godel saying: 'It's all over.' Godel had just proved the two theorems about the logical foundations of mathematics that are the subject of this valuable new book by Francesco Berto. Berto's clear exposition and his strategy of dividing the proof into short, easily digestible chunks make it pleasant reading ... .Berto is lucid and witty in exposing mistaken applications of Godel's results ... [and] has provided a thoroughly recommendable guide to Godel's theorems and their current status within, and outside, mathematical logic." ( Times Higher Education Supplement , February 2010)