A 445M is an sm_21 Fermi device with 3 SMs (144 cores). This is a low-end GPU.

There is a reference to this paper in the article:

http://graphics.stanford.edu/papers/pomegranate/

This looks like a variant of the "Lion and Man" problem which is also described as a "bounded pursuit" problem in the operations research journals:

http://www.google.com/search?q=lion+and+man+problem+&ie=...

-and-

http://mathworld.wolfram.com/PursuitCurve.html

-and-

http://books.google.com/books?id=HeESjfM2geUC (good!)

This problem may have had relevance in World War II all the way to the present: dogfights between airplanes, battleships trying to sink each other, etc.

Wolfram is frightening in its completeness... I should really look into their setup some time.

Anyone have any suggestions for starting it? From what I've gathered, it's a bit different than other math texts / different conceptual basis.