Curvature for the General Parabola - Differential Geometry Lecture 13

Explore the concept of curvature for a general parabola in this 48-minute lecture on differential geometry. Delve into the projective definition of a parabola as a conic tangent to the line at infinity. Examine the general projective 3x3 matrix for a parabola with its vertex at the origin, and derive the focus-directrix definition. Investigate the local behavior at the origin, connecting it to a function representation. Learn key formulas for calculating the curvature of a general parabola, essential for understanding curvature in general curves. This lecture builds on Zvi Har'El's philosophy of approximating curvature using parabolas, providing a foundation for more advanced topics in differential geometry.

Curvature for the general parabola | Differential Geometry 13 | NJ Wildberger