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] |
| 11028 | λ-abstraction disambiguates the scope of modal operators [Fitting] |
| 6408 | Russell needed three extra axioms to reduce maths to logic: infinity, choice and reducibility [Grayling] |
| 20475 | Maybe modal sentences cannot be true or false [Casullo] |
| 20476 | If the necessary is a priori, so is the contingent, because the same evidence is involved [Casullo] |
| 15377 | Definite descriptions pick out different objects in different possible worlds [Fitting] |
| 20471 | Epistemic a priori conditions concern either the source, defeasibility or strength [Casullo] |
| 20477 | The main claim of defenders of the a priori is that some justifications are non-experiential [Casullo] |
| 6414 | Two propositions might seem self-evident, but contradict one another [Grayling] |
| 20472 | Analysis of the a priori by necessity or analyticity addresses the proposition, not the justification [Casullo] |
| 20474 | 'Overriding' defeaters rule it out, and 'undermining' defeaters weaken in [Casullo] |