books.google.co.uk - Matrix algebra has been called "the arithmetic of higher mathematics" [Be]. We think the basis for a better arithmetic has long been available, but its versatility has hardly been appreciated, and it has not yet been integrated into the mainstream of mathematics. We refer to the system commonly called...http://books.google.co.uk/books/about/Clifford_Algebra_to_Geometric_Calculus.html?id=dScR5zwrheYC&utm_source=gb-gplus-shareClifford Algebra to Geometric Calculus