given a set A(subset of R(reals)) is bounded.and for all x belongs to R there exists epsilon(eps) such that {(x-eps,x+eps) intersection A} is countable..to prove A is countable
Homework Equations
The Attempt at a Solution
...bdd set in R is totally bounded...but iam not finding the way how to cover A by epsilon cover(has at most countable elements)
Answers and Replies
Related Calculus and Beyond Homework Help News on Phys.org
Take a closed interval C containing A and cover it with open intervals having a countable intersection with A. Now use the compactness of the closed interval C.