He posts to his blog about GA too: http://terathon.com/blog/projective-geometric-algebra-done-right/ http://terathon.com/blog/projective-geometric-algebra-done

He posts to his blog about GA too: http://terathon.com/blog/projective-geometric-algebra-done-right/ http://terathon.com/blog/projective-geometric-algebra-done-r... And, he has a website dedicated to PGA: http://projectivegeometricalgebra.org http://projectivegeometricalgebra.org