Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.


quasi
Posts:
11,740
Registered:
7/15/05


Re: Uncountable?
Posted:
Apr 25, 2014 3:35 AM


William Elliot wrote: > >Let C be a collection of open subsets of R that cover Q. >Can S = R  \/C ever be uncountable?
Yes.
Moreover, it's something you'd be expected to know.
quasi



