4 ideas
13342 | Carnap defined consequence by contradiction, but this is unintuitive and changes with substitution [Tarski on Carnap] |
13251 | Each person is free to build their own logic, just by specifying a syntax [Carnap] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |
17993 | Laws are relations of kinds, quantities and qualities, supervening on the essences of a domain [Vetter] |