L12_A
1. Review: Isometry and Conformal
2. Note: A Conformal Map Preserves the Angle between
Two Tangent Vectors
3. Proposition: A Parametrization Is Conformal if and only
if It is Isothermal
4. Theorem: Any Two Regular Surfaces Are Locally
Conformal
L12_B
1. Proposition: A Criterion for Local Conformal
2. Stereographic Projection
L12_C
1. Stereographic Projection (cont.)
