73 ideas
18290 | But what is the reasoning of the body, that it requires the wisdom you seek? [Nietzsche] |
18303 | Reject wisdom that lacks laughter [Nietzsche] |
18137 | Impredicative definitions are wrong, because they change the set that is being defined? [Bostock] |
18305 | To love truth, you must know how to lie [Nietzsche] |
18122 | Classical interdefinitions of logical constants and quantifiers is impossible in intuitionism [Bostock] |
18114 | There is no single agreed structure for set theory [Bostock] |
18107 | A 'proper class' cannot be a member of anything [Bostock] |
18115 | We could add axioms to make sets either as small or as large as possible [Bostock] |
18139 | The Axiom of Choice relies on reference to sets that we are unable to describe [Bostock] |
18105 | Replacement enforces a 'limitation of size' test for the existence of sets [Bostock] |
18108 | First-order logic is not decidable: there is no test of whether any formula is valid [Bostock] |
18109 | The completeness of first-order logic implies its compactness [Bostock] |
18123 | Substitutional quantification is just standard if all objects in the domain have a name [Bostock] |
18120 | The Deduction Theorem is what licenses a system of natural deduction [Bostock] |
18125 | Berry's Paradox considers the meaning of 'The least number not named by this name' [Bostock] |
18101 | Each addition changes the ordinality but not the cardinality, prior to aleph-1 [Bostock] |
18100 | ω + 1 is a new ordinal, but its cardinality is unchanged [Bostock] |
18102 | A cardinal is the earliest ordinal that has that number of predecessors [Bostock] |
18106 | Aleph-1 is the first ordinal that exceeds aleph-0 [Bostock] |
18095 | Instead of by cuts or series convergence, real numbers could be defined by axioms [Bostock] |
18099 | The number of reals is the number of subsets of the natural numbers [Bostock] |
18093 | For Eudoxus cuts in rationals are unique, but not every cut makes a real number [Bostock] |
18110 | Infinitesimals are not actually contradictory, because they can be non-standard real numbers [Bostock] |
18156 | Modern axioms of geometry do not need the real numbers [Bostock] |
18097 | The Peano Axioms describe a unique structure [Bostock] |
18148 | Hume's Principle is a definition with existential claims, and won't explain numbers [Bostock] |
18145 | Many things will satisfy Hume's Principle, so there are many interpretations of it [Bostock] |
18149 | There are many criteria for the identity of numbers [Bostock] |
18143 | Frege makes numbers sets to solve the Caesar problem, but maybe Caesar is a set! [Bostock] |
18116 | Numbers can't be positions, if nothing decides what position a given number has [Bostock] |
18117 | Structuralism falsely assumes relations to other numbers are numbers' only properties [Bostock] |
18141 | Nominalism about mathematics is either reductionist, or fictionalist [Bostock] |
18157 | Nominalism as based on application of numbers is no good, because there are too many applications [Bostock] |
18150 | Actual measurement could never require the precision of the real numbers [Bostock] |
18158 | Ordinals are mainly used adjectively, as in 'the first', 'the second'... [Bostock] |
18127 | Simple type theory has 'levels', but ramified type theory has 'orders' [Bostock] |
18144 | Neo-logicists agree that HP introduces number, but also claim that it suffices for the job [Bostock] |
18147 | Neo-logicists meet the Caesar problem by saying Hume's Principle is unique to number [Bostock] |
18146 | If Hume's Principle is the whole story, that implies structuralism [Bostock] |
18129 | Many crucial logicist definitions are in fact impredicative [Bostock] |
18111 | Treating numbers as objects doesn't seem like logic, since arithmetic fixes their totality [Bostock] |
18159 | Higher cardinalities in sets are just fairy stories [Bostock] |
18155 | A fairy tale may give predictions, but only a true theory can give explanations [Bostock] |
18140 | The best version of conceptualism is predicativism [Bostock] |
18138 | Conceptualism fails to grasp mathematical properties, infinity, and objective truth values [Bostock] |
18131 | If abstracta only exist if they are expressible, there can only be denumerably many of them [Bostock] |
18134 | Predicativism makes theories of huge cardinals impossible [Bostock] |
18135 | If mathematics rests on science, predicativism may be the best approach [Bostock] |
18136 | If we can only think of what we can describe, predicativism may be implied [Bostock] |
18133 | The usual definitions of identity and of natural numbers are impredicative [Bostock] |
18132 | The predicativity restriction makes a difference with the real numbers [Bostock] |
20757 | The powerful self behind your thoughts and feelings is your body [Nietzsche] |
18289 | Forget the word 'I'; 'I' is performed by the intelligence of your body [Nietzsche] |
18121 | In logic a proposition means the same when it is and when it is not asserted [Bostock] |
18299 | The will is constantly frustrated by the past [Nietzsche] |
18297 | We created meanings, to maintain ourselves [Nietzsche] |
18293 | The noble man wants new virtues; the good man preserves what is old [Nietzsche] |
18301 | We only really love children and work [Nietzsche] |
18307 | I want my work, not happiness! [Nietzsche] |
7903 | The six perfections are giving, morality, patience, vigour, meditation, and wisdom [Nagarjuna] |
18291 | Virtues can destroy one another, through jealousy [Nietzsche] |
18287 | People now find both wealth and poverty too much of a burden [Nietzsche] |
18295 | If you want friends, you must be a fighter [Nietzsche] |
18286 | The greatest experience possible is contempt for your own happiness, reason and virtue [Nietzsche] |
18296 | An enduring people needs its own individual values [Nietzsche] |
18294 | The state coldly claims that it is the people, but that is a lie [Nietzsche] |
18304 | Saints want to live as they desire, or not to live at all [Nietzsche] |
18300 | Whenever we have seen suffering, we have wanted the revenge of punishment [Nietzsche] |
18302 | Man and woman are deeply strange to one another! [Nietzsche] |
18292 | I can only believe in a God who can dance [Nietzsche] |
18298 | Not being a god is insupportable, so there are no gods! [Nietzsche] |
18288 | Heaven was invented by the sick and the dying [Nietzsche] |
18306 | We don't want heaven; now that we are men, we want the kingdom of earth [Nietzsche] |