2 ms·
Btw, I wasn't saying to just add one of Cantor's numbers. His mechanism for picking diagonals, whatever it is, is a countable list. He picks a first digit to
by xscott 2y ago
Btw, I wasn't saying to just add one of Cantor's numbers. His mechanism for picking diagonals, whatever it is, is a countable list. He picks a first digit to disagree with the first digit of my first number: That gives him 9 choices. He picks a second digit, another 9 choices. It grows exponentially, but I can make a one-to-one mapping for all (any) of his choices, so ALL of his numbers come from a countable set.