What does completion mean?
Is that what the rest of us know as closure?
Hi, can one help me please;
For S=(0,1)
We know the Cauchy sequences Xn=1/n converges to zero which is not in the set
and Xn=1/n+1 converges to one which is also not in the set
so S=[0,1].
For S= [0,1] n {Rational numbers}
is it just the set of all Real numbers.
For S={1/k:k=1,2,3,...}
Not really to sure about this one
Many thanks