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Aug 18, 2010 at 11:36 comment added George Lowther ok, I edited my answer accordingly, and to refer to Benoît's answer.
Aug 18, 2010 at 11:33 history edited George Lowther CC BY-SA 2.5
edited in light of Benoit's answer
Aug 17, 2010 at 22:58 history edited George Lowther CC BY-SA 2.5
oops, point out the flaw
Aug 17, 2010 at 22:54 comment added David E Speyer I definitely agree that this shows lim inf S_N/N=0.
Aug 17, 2010 at 22:42 history edited George Lowther CC BY-SA 2.5
added 83 characters in body
Aug 17, 2010 at 22:39 comment added George Lowther You can find arbitrarily large q's satisfying $\vert\theta-p/q\vert\le1/q^2$. As p/q tends to $\theta$ for large q, even after canceling to get p/q in lowest terms, there will be infinitely many distinct q's. So, certainly, you can find p/q in lowest terms with q exceeding the bound $N_0$.
Aug 17, 2010 at 22:36 comment added David E Speyer But there has to be $p$, with $GCD(p,q)=1$, such that $|\theta - p/q| < 1/q^2$. How do you guarantee that for your choice of $q$'s?
Aug 17, 2010 at 22:33 history answered George Lowther CC BY-SA 2.5