1208.3625 (Matteo Petrera et al.)

Spherical geometry and integrable systems    [PDF]

Matteo Petrera, Yuri B. Suris

We prove that the cosine law for spherical triangles and spherical tetrahedra defines integrable systems, both in the sense of multidimensional consistency and in the sense of dynamical systems.

View original: http://arxiv.org/abs/1208.3625