Lecture
This lecture covers the analysis of surfaces with variable curvature, focusing on surfaces with constant curvature. It explains the importance of the minimal oriented radius of curvature in machining processes and the significance of concave over convex curvatures. The lecture delves into the properties of surfaces with zero Gaussian curvature and their representation as discs. It also explores the concept of pseudo-spheres and compares their properties with spheres. The presentation includes detailed explanations and visualizations of tractricoids and catenoids, highlighting their unique properties and mathematical formulations.