Identity and Discrimination

Timothy Williamson is the Wykeham Professor of Logic at the University of Oxford. He has previously taught at the University of Edinburgh, Trinity College Dublin, and as a visitor at MIT, Princeton, the Australian National University, the Chinese University of Hong Kong. He is the author of Vagueness (1994), Knowledge and its Limits (2000), The Philosophy of Philosophy (Blackwell, 2007), and Modal Logic as Metaphysics (2013). He is a Fellow of the British Academy and a Foreign Honorary Member of the American Academy of Arts and Sciences.

• Preface to the Revised Edition ixPreface to the First Edition xiiiIntroduction 11 Concepts of Indiscriminability 41.1 Indiscriminability and Cognition 51.2 Formal Features of Indiscriminability 101.3 The Intentionality of Indiscriminability 141.4 Direct and Indirect Discrimination 201.5 Further Reflections 212 Logics of Indiscriminability 242.1 Logical Apparatus 242.2 The Non-Transitivity of Indiscriminability 343 Paradoxes of Indiscriminability 434 Concepts of Phenomenal Character 484.1 Presentations of Characters 504.2 Presentation-Sensitivity 544.3 The Identity of Characters 625 Logics of Phenomenal Character 655.1 Maximal M-Relations 655.2 Ignorance and Indeterminacy 735.3 Matching the Same Experiences 826 Paradoxes of Phenomenal Character 886.1 The Paradox of Observational Predicates 896.2 The Paradox of Phenomenal Predicates 936.3 The Failure of Observationality 996.4 Sorites Arguments and Necessary Ignorance 1037 Generalizations 1097.1 Maximal M-Relations as Minimal Revisions 1097.2 Examples 1147.3 Necessary Conditions for Personal Identity 1167.4 Sufficient Conditions 1217.5 Close Relations 1238 Modal and Temporal Paradoxes 1268.1 A Modal Paradox 1268.2 Two Temporal Paradoxes 1358.3 Comparisons 1429 Criteria of Identity 1449.1 Forms 1449.2 Functions 148Appendix Maximal M-Relations and the Axiom of Choice 154Notes (to the First Edition) 158Additional Notes (to the Revised Edition) 165References (to the First Edition) 171Additional References (to the Revised Edition) 176Index 179

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