ANTHONY LASENBY - GEOMETRIC ALGEBRA . Geometric Algebra (GA) is a mathematical system that provides a unified language for much of physics and mathematics. It was developed originally by William Kingdon Clifford , and put into its modern form by David Hestenes , starting in the 1960s. Chris Doran and I have written a book on 'Geometric Algebra for Physicists' , published by Cambridge University Press. For the main page of the Geometric Algebra group at the Cavendish, click here . ...