6 Aug
2015
6 Aug
'15
3:30 p.m.
On 8/6/15, William R Somsky <wrsomsky@gmail.com> wrote:
Umm.... Ah!
You're setting X_2 = -(sun radius) so that I is all ones, rather than [1, -1; 1, ..., 1], yes?
There's a little more to it than that. My radius sign indicates direction of rotation (rather than of teeth, as one might naïvely expect). With this convention, concentric increment corresponds to the "offset" operation in spherical geometry, in which each oriented sphere (including points and hyperplanes) changes in radius by a constant amount. WFL