User blog comment:Hyp cos/SCG(n) and some related/@comment-10429372-20140808074502

@Peng @FB. No, you misunderstood the post. A single dot reduces to nothing, leading to a function N+1 in the steps, or f0(N). Two connected dots reduce to N single dots, so that is comparable to 2N or f1(N).

I must say it is a bit of a weird way to do it, he should have mentioned that. So this is not really an ordering, but more an FGH comparison table.