L26_A
1. Review: Dupin Indicatrix and Its Graph
2. Example: Monkey Saddle
L26_B
1. Examples: z=y^3 Rotated About z=1 and Cylinder
2. Derivation: Gauss Curvature of a Surface of Revolution
L26_C
1. Derivation: Gauss Curvature of a Surface of Revolution (cont.)