Combining Philosophers

Ideas for Peter Geach, John L. Pollock and Andr Gallois

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7 ideas

9. Objects / F. Identity among Objects / 3. Relative Identity

14755

Gallois is committed to identity with respect to times, and denial of simple identity [Gallois, by Sider]

16075

Denial of absolute identity has drastic implications for logic, semantics and set theory [Wasserman on Geach]

12152

Identity is relative. One must not say things are 'the same', but 'the same A as' [Geach]

9. Objects / F. Identity among Objects / 6. Identity between Objects

16231

Occasional Identity: two objects can be identical at one time, and different at others [Gallois, by Hawley]

16027

If two things are equal, each side involves a necessity, so the equality is necessary [Gallois]

9. Objects / F. Identity among Objects / 8. Leibniz's Law

16073

Leibniz's Law is incomplete, since it includes a non-relativized identity predicate [Geach, by Wasserman]

9. Objects / F. Identity among Objects / 9. Sameness

11910

Being 'the same' is meaningless, unless we specify 'the same X' [Geach]