3 ideas
6564 | To affirm 'p and not-p' is to have mislearned 'and' or 'not' [Quine] |
8920 | Equivalence relations are reflexive, symmetric and transitive, and classify similar objects [Lipschutz] |
19216 | Propositions (such as 'that dog is barking') only exist if their items exist [Williamson] |