39 ideas
21852 | Nomads are the basis of history, and yet almost unknowable [Deleuze] |
21844 | The history of philosophy is an agent of power: how can you think if you haven't read the great names? [Deleuze] |
21849 | Thought should be thrown like a stone from a war-machine [Deleuze] |
21845 | Philosophy aims to become the official language, supporting orthodoxy and the state [Deleuze] |
21839 | When I meet objections I just move on; they never contribute anything [Deleuze] |
21901 | 'Difference' refers to that which eludes capture [Deleuze, by May] |
21841 | We must create new words, and treat them as normal, and as if designating real things. [Deleuze] |
21842 | Don't assess ideas for truth or justice; look for another idea, and establish a relationship with it [Deleuze] |
21850 | Dualisms can be undone from within, by tracing connections, and drawing them to a new path [Deleuze] |
10476 | The idea that groups of concepts could be 'implicitly defined' was abandoned [Hodges,W] |
10282 | Logic is the study of sound argument, or of certain artificial languages (or applying the latter to the former) [Hodges,W] |
10478 | Since first-order languages are complete, |= and |- have the same meaning [Hodges,W] |
10477 | |= in model-theory means 'logical consequence' - it holds in all models [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] |
10474 | |= should be read as 'is a model for' or 'satisfies' [Hodges,W] |
10473 | Model theory studies formal or natural language-interpretation using set-theory [Hodges,W] |
10475 | A 'structure' is an interpretation specifying objects and classes of quantification [Hodges,W] |
10481 | Models in model theory are structures, not sets of descriptions [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] |
21838 | Before we seek solutions, it is important to invent problems [Deleuze] |
10480 | First-order logic can't discriminate between one infinite cardinal and another [Hodges,W] |
10286 | A 'set' is a mathematically well-behaved class [Hodges,W] |
21902 | 'Being' is univocal, but its subject matter is actually 'difference' [Deleuze] |
21908 | Ontology can be continual creation, not to know being, but to probe the unknowable [Deleuze] |
21899 | There is no being beyond becoming [Deleuze] |
21903 | Ontology does not tell what there is; it is just a strange adventure [Deleuze, by May] |
21904 | Being is a problem to be engaged, not solved, and needs a new mode of thinking [Deleuze, by May] |
21847 | Before Being there is politics [Deleuze] |
21907 | We don't want another new set of categories; we want a variety of flexible categories [Deleuze, by May] |
21840 | A meeting of man and animal can be deterritorialization (like a wasp with an orchid) [Deleuze] |
21843 | People consist of many undetermined lines, some rigid, some supple, some 'lines of flight' [Deleuze] |
20239 | Unlike us, the early Greeks thought envy was a good thing, and hope a bad thing [Hesiod, by Nietzsche] |
21853 | We are currently extending capitalism to the whole of society [Deleuze] |
21848 | Some lines (of flight) are becomings which escape the system [Deleuze] |
21851 | The State requires self-preservation, but the war-machine desires destruction [Deleuze] |