17 ideas
291 | Don't assume that wisdom is the automatic consequence of old age [Plato] |
21704 | 'Impredictative' definitions fix a class in terms of the greater class to which it belongs [Linsky,B] |
23877 | Most people won't question an idea's truth if they depend on it [Weil] |
21705 | Reducibility says any impredicative function has an appropriate predicative replacement [Linsky,B] |
21727 | Definite descriptions theory eliminates the King of France, but not the Queen of England [Linsky,B] |
21719 | Extensionalism means what is true of a function is true of coextensive functions [Linsky,B] |
21723 | The task of logicism was to define by logic the concepts 'number', 'successor' and '0' [Linsky,B] |
21721 | Higher types are needed to distinguished intensional phenomena which are coextensive [Linsky,B] |
21703 | Types are 'ramified' when there are further differences between the type of quantifier and its range [Linsky,B] |
21714 | The ramified theory subdivides each type, according to the range of the variables [Linsky,B] |
21713 | Did logicism fail, when Russell added three nonlogical axioms, to save mathematics? [Linsky,B] |
21715 | For those who abandon logicism, standard set theory is a rival option [Linsky,B] |
21729 | Construct properties as sets of objects, or say an object must be in the set to have the property [Linsky,B] |
23878 | Weakness of will is the inadequacy of the original impetus to carry through the action [Weil] |
23879 | In a violent moral disagreement, it can't be that both sides are just following social morality [Weil] |
293 | Being unafraid (perhaps through ignorance) and being brave are two different things [Plato] |
23880 | When war was a profession, customary morality justified any act of war [Weil] |