85 ideas
| 24084 | Seeing with other eyes is more egoism, but exploring other perspectives leads to objectivity [Nietzsche] |
| 24092 | I tell the truth, even if it is repulsive [Nietzsche] |
| 24114 | The pain in truth is when it destroys a belief [Nietzsche] |
| 24104 | We don't create logic, time and space! The mind obeys laws because they are true [Nietzsche] |
| 15901 | Trying to represent curves, we study arbitrary functions, leading to the ordinals, which produces set theory [Cantor, by Lavine] |
| 13444 | Cantor's Theorem: for any set x, its power set P(x) has more members than x [Cantor, by Hart,WD] |
| 18098 | Cantor proved that all sets have more subsets than they have members [Cantor, by Bostock] |
| 15505 | If a set is 'a many thought of as one', beginners should protest against singleton sets [Cantor, by Lewis] |
| 10701 | Cantor showed that supposed contradictions in infinity were just a lack of clarity [Cantor, by Potter] |
| 10865 | The continuum is the powerset of the integers, which moves up a level [Cantor, by Clegg] |
| 13016 | The Axiom of Union dates from 1899, and seems fairly obvious [Cantor, by Maddy] |
| 14199 | Cantor's sets were just collections, but Dedekind's were containers [Cantor, by Oliver/Smiley] |
| 10082 | There are infinite sets that are not enumerable [Cantor, by Smith,P] |
| 13483 | Cantor's Paradox: the power set of the universe must be bigger than the universe, yet a subset of it [Cantor, by Hart,WD] |
| 8710 | The powerset of all the cardinal numbers is required to be greater than itself [Cantor, by Friend] |
| 15910 | Cantor named the third realm between the finite and the Absolute the 'transfinite' [Cantor, by Lavine] |
| 16901 | The equivalent algebra model of geometry loses some essential spatial meaning [Burge] |
| 15905 | Cantor proved the points on a plane are in one-to-one correspondence to the points on a line [Cantor, by Lavine] |
| 9983 | Cantor took the ordinal numbers to be primary [Cantor, by Tait] |
| 17798 | Cantor presented the totality of natural numbers as finite, not infinite [Cantor, by Mayberry] |
| 9971 | Cantor introduced the distinction between cardinals and ordinals [Cantor, by Tait] |
| 9892 | Cantor showed that ordinals are more basic than cardinals [Cantor, by Dummett] |
| 14136 | A cardinal is an abstraction, from the nature of a set's elements, and from their order [Cantor] |
| 15906 | Cantor tried to prove points on a line matched naturals or reals - but nothing in between [Cantor, by Lavine] |
| 11015 | Cantor's diagonal argument proved you can't list all decimal numbers between 0 and 1 [Cantor, by Read] |
| 15903 | A real is associated with an infinite set of infinite Cauchy sequences of rationals [Cantor, by Lavine] |
| 18251 | Irrational numbers are the limits of Cauchy sequences of rational numbers [Cantor, by Lavine] |
| 15902 | Irrationals and the Dedekind Cut implied infinite classes, but they seemed to have logical difficulties [Cantor, by Lavine] |
| 15908 | It was Cantor's diagonal argument which revealed infinities greater than that of the real numbers [Cantor, by Lavine] |
| 13464 | Cantor proposes that there won't be a potential infinity if there is no actual infinity [Cantor, by Hart,WD] |
| 10112 | The naturals won't map onto the reals, so there are different sizes of infinity [Cantor, by George/Velleman] |
| 8733 | The Continuum Hypothesis says there are no sets between the natural numbers and reals [Cantor, by Shapiro] |
| 17889 | CH: An infinite set of reals corresponds 1-1 either to the naturals or to the reals [Cantor, by Koellner] |
| 13447 | Cantor: there is no size between naturals and reals, or between a set and its power set [Cantor, by Hart,WD] |
| 10883 | Cantor's Continuum Hypothesis says there is a gap between the natural and the real numbers [Cantor, by Horsten] |
| 13528 | Continuum Hypothesis: there are no sets between N and P(N) [Cantor, by Wolf,RS] |
| 9555 | Continuum Hypothesis: no cardinal greater than aleph-null but less than cardinality of the continuum [Cantor, by Chihara] |
| 18174 | Cantor extended ordinals into the transfinite, and they can thus measure infinite cardinalities [Cantor, by Maddy] |
| 15893 | Cantor's theory concerns collections which can be counted, using the ordinals [Cantor, by Lavine] |
| 18173 | Cardinality strictly concerns one-one correspondence, to test infinite sameness of size [Cantor, by Maddy] |
| 16902 | Peano arithmetic requires grasping 0 as a primitive number [Burge] |
| 10232 | Property extensions outstrip objects, so shortage of objects caused the Caesar problem [Cantor, by Shapiro] |
| 18176 | Pure mathematics is pure set theory [Cantor] |
| 8631 | Cantor says that maths originates only by abstraction from objects [Cantor, by Frege] |
| 24112 | To think about being we must have an opinion about what it is [Nietzsche] |
| 24089 | Essences are fictions needed for beings who represent things [Nietzsche] |
| 16892 | Is apriority predicated mainly of truths and proofs, or of human cognition? [Burge] |
| 24115 | There is no proof that we forget things - only that we can't recall [Nietzsche] |
| 24090 | Our inclinations would not conflict if we were a unity; we imagine unity for our multiplicity [Nietzsche] |
| 24099 | We contain many minds, which fight for the 'I' of the mind [Nietzsche] |
| 24102 | Thoughts are signs (just as words are) [Nietzsche] |
| 8715 | Infinities expand the bounds of the conceivable; we explore concepts to explore conceivability [Cantor, by Friend] |
| 13454 | Cantor says (vaguely) that we abstract numbers from equal sized sets [Hart,WD on Cantor] |
| 24120 | Great orators lead their arguments, rather than following them [Nietzsche] |
| 24097 | The pragmatics of language is more comprehensible than the meaning [Nietzsche] |
| 24108 | Actions are just a release of force. They seize on something, which becomes the purpose [Nietzsche] |
| 24105 | Drives make us feel non-feelings; Will is the effect of those feelings [Nietzsche] |
| 24117 | We need lower and higher drives, but they must be under firm control [Nietzsche] |
| 24113 | Our motives don't explain our actions [Nietzsche] |
| 24087 | People who miss beauty seek the sublime, where even the ugly shows its 'beauty' [Nietzsche] |
| 24091 | The sublimity of nature which dwarfs us was a human creation [Nietzsche] |
| 24093 | We can aspire to greatness by creating new functions for ourselves [Nietzsche] |
| 24121 | Greeks might see modern analysis of what is human as impious [Nietzsche] |
| 24107 | Once a drive controls the intellect, it rules, and sets the goals [Nietzsche] |
| 24085 | For absolute morality a goal for mankind is needed [Nietzsche] |
| 24101 | We always assign values, but we may not value those values [Nietzsche] |
| 24094 | Humans are vividly aware of short-term effects, and almost ignorant of the long-term ones [Nietzsche] |
| 24111 | Happiness is the active equilibrium of our drives [Nietzsche] |
| 24109 | Actual morality is more complicated and subtle than theory (which gets paralysed) [Nietzsche] |
| 24110 | Some things we would never do, even for the highest ideals [Nietzsche] |
| 24103 | You should not want too many virtues; one is enough [Nietzsche] |
| 24106 | Talk of 'utility' presupposes that what is useful to people has been defined [Nietzsche] |
| 24086 | The goal is to settle human beings, like other animals, but humans are still changeable [Nietzsche] |
| 24123 | My eternal recurrence is opposed to feeling fragmented and imperfect [Nietzsche] |
| 24088 | See our present lives as eternal! Religions see it as fleeting, and aim at some different life [Nietzsche] |
| 24119 | The eternal return of wastefulness is a terrible thought [Nietzsche] |
| 24116 | Justice says people are not equal, and should become increasingly unequal [Nietzsche] |
| 24098 | Reasons that justify punishment can also justify the crime [Nietzsche] |
| 24118 | Do away with punishment. Counter-retribution is as bad as the crime [Nietzsche] |
| 24100 | If you don't want war, remove your borders; but you set up borders because you want war [Nietzsche] |
| 24095 | Our growth is too subtle to perceive, and long events are too slow for us to grasp [Nietzsche] |
| 24096 | Unlike time, space is subjective. Empty space was assumed, but it doesn't exist [Nietzsche] |
| 10863 | Cantor proved that three dimensions have the same number of points as one dimension [Cantor, by Clegg] |
| 24122 | Life is forces conjoined by nutrition, to produce resistance, arrangement and value [Nietzsche] |
| 13465 | Only God is absolutely infinite [Cantor, by Hart,WD] |