4 ideas
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
10558 | Abstract objects are actually constituted by the properties by which we conceive them [Zalta] |
10557 | Abstract objects are captured by second-order modal logic, plus 'encoding' formulas [Zalta] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |