Extrinsic hyperspheres in manifolds with special holonomy
arXiv:1107.1603 · doi:10.1016/j.difgeo.2012.10.003
Abstract
We describe extrinsic hyperspheres and totally geodesic hypersurfaces in manifolds with special holonomy. In particular we prove the nonexistence of extrinsic hyperspheres in quaternion-Kaehler manifolds. We develop a new approach to extrinsic hyperspheres based on the classification of special Killing forms.
published version