3 ideas
17743 | De Morgan introduced a 'universe of discourse', to replace Boole's universe of 'all things' [De Morgan, by Walicki] |
17555 | 'One' can mean undivided and not a multitude, or it can add measurement, giving number [Aquinas] |
12729 | The cause of a change is not the real influence, but whatever gives a reason for the change [Leibniz] |