6 ideas
17744 | De Morgan started the study of relations and their properties [De Morgan, by Walicki] |
13501 | De Morgan found inferences involving relations, which eluded Aristotle's syllogistic [De Morgan, by Hart,WD] |
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
16705 | Whiteness isn't created in an alteration, because it is just this-being-white [Oresme] |
16695 | Successive entities are in flux, flowing in existence, with different parts at different times [Oresme] |
1513 | The Egyptians were the first to say the soul is immortal and reincarnated [Herodotus] |