3 ideas
18465 | An 'equivalence' relation is one which is reflexive, symmetric and transitive [Kunen] |
7006 | Observing irrelevant items supports both 'all x are y' and 'all x are non-y', revealing its absurdity [Schofield,J] |
468 | Musical performance can reveal a range of virtues [Damon of Ath.] |