Saturday, 20 July 2013

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

real analysis - How to find limhrightarrow0fracsin(ha)h

How to find lim without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...