19 ideas
23531 | Philosophers should interpret the world, by expressing its possibilities [Berardi] |
10751 | Second-order logic needs the sets, and its consequence has epistemological problems [Rossberg] |
10757 | Henkin semantics has a second domain of predicates and relations (in upper case) [Rossberg] |
10759 | There are at least seven possible systems of semantics for second-order logic [Rossberg] |
10753 | Logical consequence is intuitively semantic, and captured by model theory [Rossberg] |
10752 | Γ |- S says S can be deduced from Γ; Γ |= S says a good model for Γ makes S true [Rossberg] |
10754 | In proof-theory, logical form is shown by the logical constants [Rossberg] |
10756 | A model is a domain, and an interpretation assigning objects, predicates, relations etc. [Rossberg] |
10758 | If models of a mathematical theory are all isomorphic, it is 'categorical', with essentially one model [Rossberg] |
10761 | Completeness can always be achieved by cunning model-design [Rossberg] |
10755 | A deductive system is only incomplete with respect to a formal semantics [Rossberg] |
23538 | Nothingness only exists in consciousness [Berardi] |
23532 | The delusion of free will brings a sense of guilt [Berardi] |
23537 | American white men trusted the philosophy of winning, and then discovered losing [Berardi] |
23536 | Community is now a nostalgic memory, which no longer exists [Berardi] |
23534 | Communism failed to unite western workers with the oppressed of the south [Berardi] |
23533 | The economy has replaced medieval theocracy at the centre of our society [Berardi] |
23535 | Western workers turn to nationalism, to avert the effects of globalisation [Berardi] |
12709 | Motion is not absolute, but consists in relation [Leibniz] |