L28A
1. Proposition: The Coordinate Curves Are Asymptotic Curves if and only
if f=F=0 (cont.)
L28B
1. Preview: Local Version of Gauss Bonnet Theorem
1. Proposition: The Coordinate Curves Are Asymptotic Curves if and only
if f=F=0 (cont.)
L28B
1. Preview: Local Version of Gauss Bonnet Theorem