In Reply to: Q10, Week 3 HW. posted by Evan on January 26, 2003 at 19:05:13:
>In question 10, are we given that R is uncountable?
>My thinking is that if we are not given that to assume, proving
>R - Q is uncountable would almost immediately lead to
>the fact that R is uncountable(which is not the proof you provided).
For Q8-10, you are allowed to use all the results in the Week 1-3
notes (see the top of the assignment sheet). In particular you can use Corollary 14 from Week 3/4 notes.
Terry