Subject: The umbilic torus
Date: Sun, 27 Jun 2004 19:39:50 EDT

Hey Dr. Bob...I took your umbilic torus equations and brought the surface into a graphics program just for fun.  Here it is as a transparent solid with an index of refraction computed.  

I just bought a copy of Boothby's Introduction to Differentiable Manifolds, which seems to be comprehensive and elementary.  I'm a bit excited about getting into it.  Also picked up Simmonds's Brief on Tensor Analysis. 

Hope you're enjoying the summer in Italy, maybe a nice gelati...