See also symplectic group.
The analog of the unitary group as one passes from the complex numbers to the quaternions.
A Riemannian manifold of dimension is called a quaternion-Kähler manifold if its holonomy group is a subgroup of the quotient group Sp(n).Sp(1) of the direct product group . If it is even a subgroup of just the factor, then it is called a hyperkähler manifold.
Last revised on August 9, 2020 at 13:16:17. See the history of this page for a list of all contributions to it.