3 ideas
13166 | Essences are no use in mathematics, if all mathematical truths are necessary [Mancosu] |
14080 | Are causal descriptions part of the causal theory of reference, or are they just metasemantic? [Kaplan, by Schaffer,J] |
2116 | The concept of an existing thing must contain more than the concept of a non-existing thing [Leibniz] |