5 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] |
6668 | If the present does not exist, then consciousness must be memory of the immediate past [Marshall] |
1513 | The Egyptians were the first to say the soul is immortal and reincarnated [Herodotus] |