Spherical harmonics and the icosahedron

Generalized geometry and non-symmetric gravity

“…On the other hand, generalized geometry (Refs. 7,8), which incorporates symmetries of string theory (T-duality, Btransform) and spacetime geometry (diffeomorphisms) seems to offer a well-suited geometrical framework for string theory as well as non-symmetric gravity theories. Generalized geometry as an extension of Riemannian geometry can reproduce the Einstein-Hilbert and supergravity actions (Refs.…”