2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/124910Let G be a noncyclic group of order 4, and let K be the ring Z of rational integers, the localization of Z at the prime 2 and the ring of 2-adic integers, respectively. We describe, up to conjugacy, all of the indecomposable subgroups in the group GL(m,K) which are isomorphic to G.9 pagesRepresentation Theory20H15; 20C10; 20C11text