title: Latent symmetry.
abstract: A theorem is proven which provides a sufficient condition that an isometry is a symmetry of a composite constructed from a component and a group of isometries. The concept of latent symmetry is broadened and this theorem is applied to deduce latent symmetry of example composites, including an example discussed by Litvin & Wadhawan [Acta Cryst. (2001), A57, 435-441], the latent symmetry of which could not be determined there systematically.
authors.affiliation: Department of Physics, The Eberly College of Science, The Pennsylvania State University, Penn State Berks Campus, PO Box 7009, Reading, PA 19610-6009, USA. u3c@psu.edu
authors.forename: D B
authors.initials: DB
authors.lastname: Litvin
authors.forename: V K
authors.initials: VK
authors.lastname: Wadhawan