Combining Texts

All the ideas for 'Identity', 'Presupposition' and 'What Does It All Mean?'

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12 ideas

4. Formal Logic / A. Syllogistic Logic / 3. Term Logic

19053

Logic would be more natural if negation only referred to predicates [Dummett]

5. Theory of Logic / E. Structures of Logic / 2. Logical Connectives / c. not

19052

Natural language 'not' doesn't apply to sentences [Dummett]

6. Mathematics / A. Nature of Mathematics / 4. Using Numbers / c. Counting procedure

16014

It is controversial whether only 'numerical identity' allows two things to be counted as one [Noonan]

9. Objects / E. Objects over Time / 4. Four-Dimensionalism

16024

I could have died at five, but the summation of my adult stages could not [Noonan]

9. Objects / E. Objects over Time / 5. Temporal Parts

16023

Stage theorists accept four-dimensionalism, but call each stage a whole object [Noonan]

9. Objects / F. Identity among Objects / 2. Defining Identity

16016

Identity definitions (such as self-identity, or the smallest equivalence relation) are usually circular [Noonan]

16017

Identity is usually defined as the equivalence relation satisfying Leibniz's Law [Noonan]

16015

Problems about identity can't even be formulated without the concept of identity [Noonan]

16020

Identity can only be characterised in a second-order language [Noonan]

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

16019

Leibniz's Law must be kept separate from the substitutivity principle [Noonan]

16018

Indiscernibility is basic to our understanding of identity and distinctness [Noonan]

19. Language / A. Nature of Meaning / 6. Meaning as Use

4001	The meaning of a word contains all its possible uses as well as its actual ones [Nagel]