display all the ideas for this combination of texts
3 ideas
9848 | Content is replaceable if identical, so replaceability can't define identity [Dummett, by Dummett] |
9842 | Frege introduced criteria for identity, but thought defining identity was circular [Dummett] |
16027 | If two things are equal, each side involves a necessity, so the equality is necessary [Gallois] |