Saturday, April 9, 2016

elementary set theory - Bijection between mathbbZtimesmathbbZtimesdots and mathbbR

Is there a bijection between Z×Z× for countably infinitely many Z's and R? That is, is Z×Z×, repeated countably infinitely many times, uncountable?

No comments:

Post a Comment

analysis - Injection, making bijection

I have injection f:AB and I want to get bijection. Can I just resting codomain to f(A)? I know that every function i...