20 ideas
| 10882 | Predicative definitions only refer to entities outside the defined collection [Horsten] |
| 10807 | Mathematics reduces to set theory, which reduces, with some mereology, to the singleton function [Lewis] |
| 10809 | We can accept the null set, but not a null class, a class lacking members [Lewis] |
| 10811 | The null set plays the role of last resort, for class abstracts and for existence [Lewis] |
| 10812 | The null set is not a little speck of sheer nothingness, a black hole in Reality [Lewis] |
| 10813 | What on earth is the relationship between a singleton and an element? [Lewis] |
| 10814 | Are all singletons exact intrinsic duplicates? [Lewis] |
| 10806 | Megethology is the result of adding plural quantification to mereology [Lewis] |
| 10816 | We can use mereology to simulate quantification over relations [Lewis] |
| 10884 | A theory is 'categorical' if it has just one model up to isomorphism [Horsten] |
| 10885 | Computer proofs don't provide explanations [Horsten] |
| 10808 | Mathematics is generalisations about singleton functions [Lewis] |
| 10881 | The concept of 'ordinal number' is set-theoretic, not arithmetical [Horsten] |
| 10815 | We don't need 'abstract structures' to have structural truths about successor functions [Lewis] |
| 10810 | I say that absolutely any things can have a mereological fusion [Lewis] |
| 14637 | Only individuals have essences, so numbers (as a higher type based on classes) lack them [McMichael] |
| 14636 | Essences are the interesting necessary properties resulting from a thing's own peculiar nature [McMichael] |
| 14640 | Maybe essential properties have to be intrinsic, as well as necessary? [McMichael] |
| 14638 | Essentialism is false, because it implies the existence of necessary singular propositions [McMichael] |
| 14639 | Individuals enter into laws only through their general qualities and relations [McMichael] |