14 ideas
22519 | Philosophers are revealed by their fears [Billington] |
14970 | Normal system K has five axioms and rules [Cresswell] |
14971 | D is valid on every serial frame, but not where there are dead ends [Cresswell] |
14972 | S4 has 14 modalities, and always reduces to a maximum of three modal operators [Cresswell] |
14973 | In S5 all the long complex modalities reduce to just three, and their negations [Cresswell] |
14976 | Reject the Barcan if quantifiers are confined to worlds, and different things exist in other worlds [Cresswell] |
14974 | A relation is 'Euclidean' if aRb and aRc imply bRc [Cresswell] |
16668 | Modes of things exist in some way, without being full-blown substances [Gassendi] |
16730 | If matter is entirely atoms, anything else we notice in it can only be modes [Gassendi] |
14975 | A de dicto necessity is true in all worlds, but not necessarily of the same thing in each world [Cresswell] |
16619 | We observe qualities, and use 'induction' to refer to the substances lying under them [Gassendi] |
3400 | Things must have parts to intermingle [Gassendi] |
16593 | Atoms are not points, but hard indivisible things, which no force in nature can divide [Gassendi] |
16729 | How do mere atoms produce qualities like colour, flavour and odour? [Gassendi] |