5 ideas
9390 | Logic guides thinking, but it isn't a substitute for it [Rumfitt] |
8923 | Numbers are identified by their main properties and relations, involving the successor function [MacBride] |
8926 | For mathematical objects to be positions, positions themselves must exist first [MacBride] |
9389 | Vague membership of sets is possible if the set is defined by its concept, not its members [Rumfitt] |
20365 | We only see points in motion, and thereby infer movement [Rescher] |