21 Dec
2004
21 Dec
'04
9:48 a.m.
A puzzle on natural density appeared in the Fall 2004 newsletter of MSRI: Find two sets of natural density 1/2 whose intersection does not have a natural density (i.e. the limit does not exist). Here I mean natural density in the positive integers, density(S) = lim (number of elements in S that are <= n) / n Gary McGuire