· The “I Ching” and the Man of Papers
· Borges and Mathematics
· Gödel (for all): Table of contents
· Gödel (for all): INTRODUCTION
· Interview: Readers want to know, 2005
· Mythology and cliché in literary...
· Short story as a logical system
· A conversation with Guillermo Martínez
· Readers want to know...
· Interview (Regarding Roderer, Greece)
· September 11
· Reality and fantasy
· About Guillermo Martínez
Translated by J. C. Kelly
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . …13
PART ONE
Chapter one
A general overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . …21
The true and the provable. Formal axiomatic systems.
Completeness and axioms. Infinity: The bête noire of the
foundations of mathematics. The Incompleteness Theorem.
Gödel’s original proof. The theorem of consistency.
Extension and scope of Gödel’s theorem. Warnings.
Gödel, computers and artificial intelligence. Philosophical
applications. Examples and exercises.
Chapter two
Hilbert and the problem of foundations . . . . . . . . . . . . . . . ....51
Hilbert’s program. Discussion: What Gödel’s theorems do
and do not say. Examples and exercises.
Chapter three
Language for arithmetic and the definition of truth . . . . . . …..71
Formal language. Statements. Axioms and inference
rules in first order logic. Proofs and theories. Truth in
mathematics: a formal definition. Completeness and
consistency in our formal theory. The solution to a
dilemma. Exercises.
Chapter four
Gödel’s theorem beyond mathematics . . . . . . . . . . . . . . . . .103
Julia Kristeva: Gödel and semiotics. The development of a
formal theory for poetic language. Paul Virilio:
Gödel and the new technologies. Régis Debray and Michel
Serres: Gödel and politics. Deleuze and Guattari: Gödel and
philosophy. Jacques Lacan: Gödel and psychoanalysis. Jean-
François Lyotard: Gödel and the postmodern condition.
Exercises.
PART TWO
Proof of the theorems
Roadmap
Concatenation and the Incompleteness Theorem . . . . . . . . ..147
If there exists an expressible concatenation, Gödel’s
theorems hold.
Chapter five
The semantic version of the Incompleteness Theorem . . . . . 151
Concatenation using Morse code. The Self-referential
method. “To be true” is not expressible.
Chapter six
General (syntactic) version of the Incompleteness Theorem.
The theorem of consistency . . . . . . . . . . . . . . . . . . . . . . . . 165
Exercises.
Chapter seven
There exists an expressible concatenation in arithmetic . . . . .189
Chapter eight
Any recursive property can be expressed using
concatenation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
PART THREE
Incompleteness in a general and abstract context
Chapter nine
Incompleteness in a general and abstract context . . . . . . . . . 217
An intrinsic proof of Gödel’s theorem.
Concatenation and Gödel’s argument. Conclusions
and unsolved problems. Exercises.
Appendix I
Examples of complete and incomplete theories . . . . . . . . . . .261
Appendix II
Historical appendix: Landmarks in the history of the
Incompleteness Theorem. . . . . . . . . . . . . . . . . . . . . . . . . . .277
Appendix III
Kurt Gödel, Mr Why . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..289
Chronology of his life . . . . . . . . . . . . . . . . . . . . . . . . . . . .293
Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .297
Recommended reading . . . . . . . . . . . . . . . . . . . . . . . . . . . ..301
Index of names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .303
Index of terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..305