17 ideas
10282 | Logic is the study of sound argument, or of certain artificial languages (or applying the latter to the former) [Hodges,W] |
10283 | A formula needs an 'interpretation' of its constants, and a 'valuation' of its variables [Hodges,W] |
10284 | There are three different standard presentations of semantics [Hodges,W] |
10285 | I |= φ means that the formula φ is true in the interpretation I [Hodges,W] |
10288 | Down Löwenheim-Skolem: if a countable language has a consistent theory, that has a countable model [Hodges,W] |
10289 | Up Löwenheim-Skolem: if infinite models, then arbitrarily large models [Hodges,W] |
10287 | If a first-order theory entails a sentence, there is a finite subset of the theory which entails it [Hodges,W] |
10286 | A 'set' is a mathematically well-behaved class [Hodges,W] |
7861 | Libet says the processes initiated in the cortex can still be consciously changed [Libet, by Papineau] |
6660 | Libet found conscious choice 0.2 secs before movement, well after unconscious 'readiness potential' [Libet, by Lowe] |
20937 | The state should produce higher civilisations for all, in tune with the economic apparatus [Gramsci] |
20935 | Eventually political parties lose touch with the class they represent, which is dangerous [Gramsci] |
20936 | Caesarism emerges when two forces in society are paralysed in conflict [Gramsci] |
20941 | Totalitarian parties cut their members off from other cultural organisations [Gramsci] |
20939 | What is the function of a parliament? Does it even constitute a part of the State structure? [Gramsci] |
20938 | Liberalism's weakness is its powerful rigid bureaucracy [Gramsci] |
20940 | Perfect political equality requires economic equality [Gramsci] |