16 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] |
22687 | Maybe literary assessment is evaluating the artist as a suitable friend [Gaut] |
22686 | Formalists say aesthetics concerns types of beauty, or unity, complexity and intensity [Gaut] |
22690 | 'Moralism' says all aesthetic merits are moral merits [Gaut] |
22685 | Good art does not necessarily improve people (any more than good advice does) [Gaut] |
22684 | Good ethics counts towards aesthetic merit, and bad ethics counts against it [Gaut] |
22689 | If we don't respond ethically in the way a work prescribes, that is an aesthetic failure [Gaut] |