Hi all,

the problem is to find all the limit points of the set A = { 1/n + 1/m : n,m are positive integers }. I already know that 0 and {1/n : n is a positive integer} are limit points of A. but Are there any other limit points or not? if yes, what are they? If no, how can I show that there is no other limit point of A?

Thanks in advance