16 ideas
23449 | Interpreting a text is representing it as making sense [Morris,M] |
18755 | Validity is explained as truth in all models, because that relies on the logical terms [McGee] |
23484 | Bipolarity adds to Bivalence the capacity for both truth values [Morris,M] |
18751 | Natural language includes connectives like 'because' which are not truth-functional [McGee] |
23494 | Conjunctive and disjunctive quantifiers are too specific, and are confined to the finite [Morris,M] |
18761 | Second-order variables need to range over more than collections of first-order objects [McGee] |
18753 | An ontologically secure semantics for predicate calculus relies on sets [McGee] |
18754 | Logically valid sentences are analytic truths which are just true because of their logical words [McGee] |
18757 | Soundness theorems are uninformative, because they rely on soundness in their proofs [McGee] |
23460 | To count, we must distinguish things, and have a series with successors in it [Morris,M] |
23451 | Counting needs to distinguish things, and also needs the concept of a successor in a series [Morris,M] |
23452 | Discriminating things for counting implies concepts of identity and distinctness [Morris,M] |
18760 | The culmination of Euclidean geometry was axioms that made all models isomorphic [McGee] |
23491 | There must exist a general form of propositions, which are predictabe. It is: such and such is the case [Morris,M] |
18762 | A maxim claims that if we are allowed to assert a sentence, that means it must be true [McGee] |
1513 | The Egyptians were the first to say the soul is immortal and reincarnated [Herodotus] |