第22講 The Gauss Map and Its Fundamental Properties (cont.)
Title
第22講 The Gauss Map and Its Fundamental Properties (cont.)
Video
L22A
Syllabus
章節大綱
L22A 1. Proposition: A Connected Surface with Every Point Being Umbilical Point Is a Piece of Plane or Sphere (cont.)
L22B 1. Proposition: A Connected Surface with Every Point Being Umbilical Point Is a Piece of Plane or Sphere (cont.) 2. Definition: Asymptotic Direction and Asymptotic Curve 3. Example: Straight Line
L22C 1. Example: Straight Line (cont.) and Curve with Positive Curvature 2. Observation: There Is NO Asymptotic Direction at an Elliptic Point 3. Definition: Dupin Indicatrix