35 ideas
13252 | Some truths have true negations [Beall/Restall] |
19574 | If man sacrifices truth he sacrifices himself, by acting against his own convictions [Novalis] |
13247 | A truthmaker is an object which entails a sentence [Beall/Restall] |
19571 | Delusion and truth differ in their life functions [Novalis] |
13249 | (∀x)(A v B) |- (∀x)A v (∃x)B) is valid in classical logic but invalid intuitionistically [Beall/Restall] |
13243 | Excluded middle must be true for some situation, not for all situations [Beall/Restall] |
13242 | It's 'relevantly' valid if all those situations make it true [Beall/Restall] |
13246 | Relevant logic does not abandon classical logic [Beall/Restall] |
13245 | Relevant consequence says invalidity is the conclusion not being 'in' the premises [Beall/Restall] |
13254 | A doesn't imply A - that would be circular [Beall/Restall] |
13255 | Relevant logic may reject transitivity [Beall/Restall] |
13250 | Free logic terms aren't existential; classical is non-empty, with referring names [Beall/Restall] |
13235 | Logic studies consequence; logical truths are consequences of everything, or nothing [Beall/Restall] |
13238 | Syllogisms are only logic when they use variables, and not concrete terms [Beall/Restall] |
13234 | The view of logic as knowing a body of truths looks out-of-date [Beall/Restall] |
13232 | Logic studies arguments, not formal languages; this involves interpretations [Beall/Restall] |
13241 | The model theory of classical predicate logic is mathematics [Beall/Restall] |
13253 | There are several different consequence relations [Beall/Restall] |
13240 | A sentence follows from others if they always model it [Beall/Restall] |
13236 | Logical truth is much more important if mathematics rests on it, as logicism claims [Beall/Restall] |
13237 | Preface Paradox affirms and denies the conjunction of propositions in the book [Beall/Restall] |
10467 | Individuals consist of 'compresent' tropes [Bacon,John] |
10464 | A trope is a bit of a property or relation (not an exemplification or a quality) [Bacon,John] |
10465 | Trope theory is ontologically parsimonious, with possibly only one-category [Bacon,John] |
19575 | Refinement of senses increasingly distinguishes individuals [Novalis] |
13244 | Relevant necessity is always true for some situation (not all situations) [Beall/Restall] |
10466 | Maybe possible worlds are just sets of possible tropes [Bacon,John] |
19572 | Experiences tests reason, and reason tests experience [Novalis] |
19573 | The seat of the soul is where our inner and outer worlds interpenetrate [Novalis] |
13239 | Judgement is always predicating a property of a subject [Beall/Restall] |
19577 | Everything is a chaotic unity, then we abstract, then we reunify the world into a free alliance [Novalis] |
13248 | We can rest truth-conditions on situations, rather than on possible worlds [Beall/Restall] |
13233 | Propositions commit to content, and not to any way of spelling it out [Beall/Restall] |
19578 | Only self-illuminated perfect individuals are beautiful [Novalis] |
19576 | Religion needs an intermediary, because none of us can connect directly to a godhead [Novalis] |