Description
Book SynopsisIs mathematics ''entangled'' with its various formalisations? Or arethe central conceptsof mathematics largely insensitivetoformalisation, or ''formalism free''? What is the semantic point of view and how is it implemented in foundational practice? Does a given semantic framework always have an implicit syntax? Inspired bywhat she calls the ''natural language moves'' of Gödeland Tarski, Juliette Kennedy considers what rolesthe concepts of ''entanglement'' and ''formalism freeness'' play in a range oflogical settings, from computability and set theory to model theory and second order logic, to logicality, developing an entirely original philosophy of mathematics along the way. Thetreatment is historically, logically and set-theoretically rich, andtopics such as naturalism and foundations receive their due, but now with a new twist.
Trade Review'Kennedy creatively embeds Gödel's ideal of 'formalism freeness' into myriad results in contemporary logic and foundations of mathematics, offering novel historical reconstructions of Tarski and Turing. A cutting-edge work of philosophy that synthesizes, while going beyond, our current ideas about foundations.' Juliet Floyd, Boston University
Table of Contents1. Introduction; 1.1 The Syntax/Semantics Distinction; 1.2 Our Logical Pluralism; 1.3 Formal vs Linguistic Semantics; 2. Formalism Freeness and Entanglement: Definitions; 2.1 Precedents; 2.2 Entanglement and Formalism Freeness: Varieties; 2.3 A Simple Preference for Semantic Methods?; 3. Computability: the Primary Example; 3.1 On Adequacy; 3.2 Different Notions of Computability Emerge in the 1930s; 3.3 The 'Scope Problem'; 3.4 Turing's Analysis of Computability; 3.5 Gödel's Reaction to Turing's Work at the Time; 3.6 Coda: a Word About Deviant Encodings; 4. Gödel and Formalism Independence; 4.1 Gödel on Formalism; 4.2 Episodes of Formalism Independence in Gödel's Writings; 4.3 Gödel's Princeton Bicentennial Lecture; 4.4 Implementation; 4.5 Logical Autonomy?; 5. Tarski and 'the Mathematical'; 5.1 'The Mathematical', Definable Sets of Reals, and Naïve Set Theory; 5.2 Tarski's Naturalism; 5.3 Squeezing First Order Definability; 5.4 Tarski and Logicality; 5.5 In Sum: Parataxis; 5.6 Coda: an Improvement of McGee's Theorem; 6. Model Theoretic Aspects; 6.1 Abstract Elementary Classes; 6.2 Patchwork Foundations, On-Again-Off-Again-Sim and Implicit Syntax; 6.3 Implicit Syntax, Implicit Logic; 6.4 A Remark on Set Theory; 6.5 Symbiosis; 6.6 Coda: Symbiosis in Detail; 7. On the Side of Natural Language.
