You've lost me with the circle equations but I love both the geometry within the shot and the timing to put the pedestrian behind the post. If you make the line of the building parallel with the bottom of the frame and crop a spot from the RH edge you can get a bisected triangle in too!
Jim, there is a section Other Hobbies, Interests and non Photography Related
If you want to start a thread called drawing with algebra, knock your self out ... the non photography section of the site isnt used nearly as much as would be nice imo
Just extending the impact of geometry on composition beyond the rule of thirds etc: what's wrong with that! I don't know, some people want their photography just too easy!
... its not really maths for me if that helps, I just worked out what to change from what was already there, I havent the first clue what any of it means