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] |
13831 | Logic is based on transitions between sentences [Prawitz] |
11026 | Classical logic is deliberately extensional, in order to model mathematics [Fitting] |
13825 | Natural deduction introduction rules may represent 'definitions' of logical connectives [Prawitz] |
11028 | λ-abstraction disambiguates the scope of modal operators [Fitting] |
13823 | In natural deduction, inferences are atomic steps involving just one logical constant [Prawitz] |
15377 | Definite descriptions pick out different objects in different possible worlds [Fitting] |
21733 | The right-wing conception of freedom is based on the idea of self-ownership [Cohen,GA] |
21739 | Plenty of people have self-ownership, but still lack autonomy [Cohen,GA] |
21736 | It is doubtful whether any private property was originally acquired legitimately [Cohen,GA] |
21734 | It is plausible that no one has an initial right to own land and natural resources [Cohen,GA] |
21735 | Every thing which is now private started out as unowned [Cohen,GA] |