View Single Post
P: 32
 Quote by garrett Answering your other questions: For now, $r = \sqrt{x1^2 + x2^2 + x3^2}$ is best thought of as just a notational convenience.
Ok, but there are surely some bounds on the validity of group element then as we expanded in a power series the answer is only going to be valid for small x and small r; the series will break down for large coordinates.