12 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] |
9216 | Each area of enquiry, and its source, has its own distinctive type of necessity [Fine,K] |
15377 | Definite descriptions pick out different objects in different possible worlds [Fitting] |
9214 | Unsupported testimony may still be believable [Fine,K] |
13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
9215 | Causation is easier to disrupt than logic, so metaphysics is part of nature, not vice versa [Fine,K] |
20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |