Isometric Mappings (Length-Preserving)
An allowable mapping from S S S to S ∗ S^{*} S∗ is isometric if and only if the coefficients of the first fundamental forms are the same, i.e.,An allowab
An allowable mapping from S S S to S ∗ S^{*} S∗ is isometric if and only if the coefficients of the first fundamental forms are the same, i.e.,An allowab