4 ideas
10242 | I apply structuralism to concrete and abstract objects indiscriminately [Quine] |
10243 | My ontology is quarks etc., classes of such things, classes of such classes etc. [Quine] |
8249 | Class membership is not transitive, unlike being part of a part of the whole [Lesniewski, by George/Van Evra] |
9145 | We form the image of a cardinal number by a double abstraction, from the elements and from their order [Cantor] |