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Ideas of Harold Noonan, by Text

[British, fl. 1989, At Birmingham University.]

2009 Identity
1 p.2 It is controversial whether only 'numerical identity' allows two things to be counted as one
1 p.2 Problems about identity can't even be formulated without the concept of identity
2 p.2 Identity is usually defined as the equivalence relation satisfying Leibniz's Law
2 p.2 Identity definitions (such as self-identity, or the smallest equivalence relation) are usually circular
2 p.2 Indiscernibility is basic to our understanding of identity and distinctness
2 p.3 Leibniz's Law must be kept separate from the substitutivity principle
2 p.4 Identity can only be characterised in a second-order language
5 p.13 Stage theorists accept four-dimensionalism, but call each stage a whole object
5 p.14 I could have died at five, but the summation of my adult stages could not