3 ideas
21548 | The null class is the class with all the non-existents as its members [MacColl, by Lackey] |
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] |