18 ideas
18889 | Ostensive definitions needn't involve pointing, but must refer to something specific [Salmon,N] |
19086 | Does the pragmatic theory of meaning support objective truth, or make it impossible? [Macbeth] |
14627 | S4, and therefore S5, are invalid for metaphysical modality [Salmon,N, by Williamson] |
23623 | Predicativism says only predicated sets exist [Hossack] |
23624 | The iterative conception has to appropriate Replacement, to justify the ordinals [Hossack] |
23625 | Limitation of Size justifies Replacement, but then has to appropriate Power Set [Hossack] |
23628 | The connective 'and' can have an order-sensitive meaning, as 'and then' [Hossack] |
23627 | 'Before' and 'after' are not two relations, but one relation with two orders [Hossack] |
23626 | Transfinite ordinals are needed in proof theory, and for recursive functions and computability [Hossack] |
19093 | Greek mathematics is wholly sensory, where ours is wholly inferential [Macbeth] |
23621 | Numbers are properties, not sets (because numbers are magnitudes) [Hossack] |
23622 | We can only mentally construct potential infinities, but maths needs actual infinities [Hossack] |
18888 | Essentialism says some properties must be possessed, if a thing is to exist [Salmon,N] |
19091 | Seeing reality mathematically makes it an object of thought, not of experience [Macbeth] |
19088 | For pragmatists a concept means its consequences [Macbeth] |
18886 | Frege's 'sense' solves four tricky puzzles [Salmon,N] |
18887 | The perfect case of direct reference is a variable which has been assigned a value [Salmon,N] |
18891 | Nothing in the direct theory of reference blocks anti-essentialism; water structure might have been different [Salmon,N] |