Regular Skew Polyhedron: Polyhedron, Singular Point, Complex Differential Equation

Heun's Equation: Ordinary Differential Equation, Regular Singular Point, Riemann Sphere

Kepler Poinsot Polyhedron: Geometry, Regular Polyhedron, Stellation, Dodecahedron

Skeletal Regular Polyhedron: Polyhedron, Geometry, Three Dimensional Space

Toroidal Polyhedron: Geometry, Polyhedron, Genus (Mathematics), Torus, Regular Polygon, Convex Hull