Well, I'm an atheist. I don't believe in God, and I also believe that if it was possible for there to BE a God, then there would be more than one. There's actually a mathematical theory which proves this. I can't remember what it's called though.
I am atheist as well, an all too common sight on these boards if I may be so bold...
As for your mathmatical law, my AP Chemistry teacher (who is devoutly religous with her depiction of dying Christ on a cross on a poster board sheet that is 2 feet by 3 feet) has argued that the laws of thermodynaics explain why evolution is not real. Entropy vs. Enthelpy... baseically the law that determines that everything in the universe will either go to its lowest energy state or its highest degree of chaos/disorginization/degrees of freedom and what have you...
Also, apparently the eye is so complex that the pieces to make it could not have sustained each other without other pieces, and unless they were evolved at the same time, they eye would not work the way it does now. This came from my Algebra II teacher last year.
By the way, I don't go to a Catholic school and I swear I am atheist... I just find these arguments very interesting and thought I would share with the group.