22 ideas
9821 | A definition need not capture the sense of an expression - just get the reference right [Frege, by Dummett] |
18889 | Ostensive definitions needn't involve pointing, but must refer to something specific [Salmon,N] |
9585 | Since every definition is an equation, one cannot define equality itself [Frege] |
14627 | S4, and therefore S5, are invalid for metaphysical modality [Salmon,N, by Williamson] |
17446 | Counting rests on one-one correspondence, of numerals to objects [Frege] |
9582 | Husserl rests sameness of number on one-one correlation, forgetting the correlation with numbers themselves [Frege] |
9586 | In a number-statement, something is predicated of a concept [Frege] |
9580 | Our concepts recognise existing relations, they don't change them [Frege] |
9589 | Numbers are not real like the sea, but (crucially) they are still objective [Frege] |
9577 | The naïve view of number is that it is like a heap of things, or maybe a property of a heap [Frege] |
9578 | If objects are just presentation, we get increasing abstraction by ignoring their properties [Frege] |
18888 | Essentialism says some properties must be possessed, if a thing is to exist [Salmon,N] |
9581 | Many people have the same thought, which is the component, not the private presentation [Frege] |
9579 | Disregarding properties of two cats still leaves different objects, but what is now the difference? [Frege] |
9587 | How do you find the right level of inattention; you eliminate too many or too few characteristics [Frege] |
9588 | Number-abstraction somehow makes things identical without changing them! [Frege] |
9583 | Psychological logicians are concerned with sense of words, but mathematicians study the reference [Frege] |
9584 | Identity baffles psychologists, since A and B must be presented differently to identify them [Frege] |
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] |
19216 | Propositions (such as 'that dog is barking') only exist if their items exist [Williamson] |
18891 | Nothing in the direct theory of reference blocks anti-essentialism; water structure might have been different [Salmon,N] |