Models of rubric: Automorphic functions Model 244 Tetrahedron-, octahedron-, icosahedron-division on the spherical surface Model 245 Tetrahedron-, octahedron-, icosahedron-division on the spherical surface Model 246 Tetrahedron-, octahedron-, icosahedron-division on the spherical surface Model 305 Drawings of polyangular circular arcs Model 1801 Slide: Altitude chart of the elliptic modular function Model 1802 Slide: Altitude chart of the elliptic modular function Model 1803 Slide: Altitude chart of the elliptic modular function