Identity symmetry (4D)

Four-dimensional identity symmetry, notated as I×I×I×I, is a 3D spherical Coxeter group. It is the symmetry group of the irregular pentachoron and is equivalent to the identity group which has no symmetry. It therefore appears as a subgroup of any polychoric symmetry.

Subgroups

 * I×I×I×I (maximal)