Orbifold Geometrization

I was curious about the actual algorithm for geometrizing an orbifold — it’s only lightly sketched at in Thurston’s Three Dimensional Topology and Geometry. Hence the app. The details are now inside some javascript: Check

Pages from Topocomix

Doodlebug joins us on a tour of topological surfaces, with drawings and paper and scissor exercises. Another project to complete! Videos of the physical exercises will appear sometime — they do not seem to be

5444

Welcome to hyperbolic geometry, with this beautiful steel rendition of the 5444 tiling: at each corner three squares and one pentagon meet, forcing the surface to bend and coil up with negative curvature. The straight