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AuthorStenlund, Sรถren. author
TitleCombinators, ฮป-Terms and Proof Theory [electronic resource] / by Sรถren Stenlund
ImprintDordrecht : Springer Netherlands, 1972
Connect tohttp://dx.doi.org/10.1007/978-94-010-2913-1
Descript X, 177 p. online resource

SUMMARY

The aim of this monograph is to present some of the basic ideas and results in pure combinatory logic and their applications to some topics in proof theory, and also to present some work of my own. Some of the material in chapter 1 and 3 has already appeared in my notes Introduction to Combinatory Logic. It appears here in revised form since the presenยญ tation in my notes is inaccurate in several respects. I would like to express my gratitude to Stig Kanger for his invaluยญ able advice and encouragement and also for his assistance in a wide variety of matters concerned with my study in Uppsala. I am also inยญ debted to Per Martin-USf for many valuable and instructive conversaยญ tions. As will be seen in chapter 4 and 5, I also owe much to the work of Dag Prawitz and W. W. Tait. My thanks also to Craig McKay who read the manuscript and made valuable suggestions. I want, however, to emphasize that the shortcomings that no doubt can be found, are my sole responsibility. Uppsala, February 1972


CONTENT

1. The Theory of Combinators and the ?-Calculus -- 1. Introduction -- 2. Informal theory of combinators -- 3. Equality and reduction -- 4. The ?-calculus -- 5. Equivalence of the ?-calculus and the theory of combinators -- 6. Set-theoretical interpretations of combinators -- 7. Illative combinatory logic and the paradoxes -- 2. The Church-Rosser Property -- 1. Introduction -- 2. R-reductions -- 3. One-step reduction -- 4. Proof of main result -- 5. Generalization -- 6. Generalized weak reduction -- 3. Combinatory Arithmetic -- 1. Introduction -- 2. Combinatory definability -- 3. Fixed-points and numeral sequences -- 4. Undecidability results -- 4. Computable Functionals of Finite Type -- 1. Introduction -- 2. Finite types and terms of finite types -- 3. The equation calculus -- 4. The role of the induction rule -- 5. Soundness of the axioms -- 6. Defining axioms and uniqueness rules -- 7. Reduction rules -- 8. Computability and normal form -- 9. Interpretation of types and terms -- 5. Proofs in the Theory of Species -- 1. Introduction -- 2. Formulas, terms and types -- 3. A-terms and deductions -- 4. The equation calculus -- 5. Reduction and normal form -- 6. The strong normalization theorem -- 7. Interpretation of types and terms -- Index of Names -- Index of Subjects


Philosophy Logic Philosophy Logic



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