Locally Convex Hypersurfaces, Nonnegative Curvature



The h-Principle, Convex Integration, and Isometric Embeddings



Gauss Maps and Surfaces with Connected Shades



Skew Submanifolds and Quadric Surfaces



Discrete and Polyhedral Geometry



Geometric Knot Theory



Isoperimetric and Other Geometric Inequalities



Special Points of Closed Curves, Four-Vertex Theorems



Principal Line Fields and Umbilic Points



Real Algebraic Geometry



Other



Expository