Vladimir Igorevich Arnol’d on wave fronts, tennis balls, and caustics
Vladimir Igorevich Arnol’d on wave fronts, tennis balls, and caustics -- source link
#caustics#plane curves#algebraic geometry#topology#invariants#contact structures#contact topology#wave fronts#waves#curves#points#control#convex#inflection point#southern curve#interpolation#singularities#tennis ball#hemisphere#affine#affine line#affine curve