Analytic geometry

I found this article on twitter. AI search it according to my interest, although privacy on your Cookie cause political difficulty.

r=(α-β)/2π

As long as the parallel curves are closed, you can find r. The problem is that convex and concave curves are chaotic

I think that this is Knotty Problems.

g(α#β)=g(α)+g(β)

g(X)=0, so you can decide α and β alternatively, and you still define r=ρ.