display all the ideas for this combination of texts
3 ideas
12666 | We can base logic on acceptability, and abandon the Fregean account by truth-preservation [Ellis] |
13288 | Consequence is truth-preserving, either despite substitutions, or in all interpretations [Koslicki] |
14506 | 'Roses are red; therefore, roses are colored' seems truth-preserving, but not valid in a system [Koslicki] |