15 ideas
| 15375 | If terms change their designations in different states, they are functions from states to objects [Fitting] |
| 15376 | Intensional logic adds a second type of quantification, over intensional objects, or individual concepts [Fitting] |
| 15378 | Awareness logic adds the restriction of an awareness function to epistemic logic [Fitting] |
| 15379 | Justication logics make explicit the reasons for mathematical truth in proofs [Fitting] |
| 11026 | Classical logic is deliberately extensional, in order to model mathematics [Fitting] |
| 11970 | Logicians like their entities to exhibit a maximum degree of purity [Kaplan] |
| 11028 | λ-abstraction disambiguates the scope of modal operators [Fitting] |
| 6409 | The 'simple theory of types' distinguishes levels among properties [Ramsey, by Grayling] |
| 11969 | Models nicely separate particulars from their clothing, and logicians often accept that metaphysically [Kaplan] |
| 11971 | The simplest solution to transworld identification is to adopt bare particulars [Kaplan] |
| 15377 | Definite descriptions pick out different objects in different possible worlds [Fitting] |
| 11973 | Unusual people may have no counterparts, or several [Kaplan] |
| 11972 | Essence is a transworld heir line, rather than a collection of properties [Kaplan] |
| 3212 | Beliefs are maps by which we steer [Ramsey] |
| 11967 | Sentences might have the same sense when logically equivalent - or never have the same sense [Kaplan] |