On semiprime comultiplication modules over pullback rings
Volume 146 / 2017
Colloquium Mathematicum 146 (2017), 197-211
MSC: 03C45, 13C05, 16D70.
DOI: 10.4064/cm6726-1-2016
Published online: 29 September 2016
Abstract
Following some ideas and a technique introduced in [Algebra Discrete Math. 2009, no. 1, 1–13] and [Colloq. Math. 120 (2010), 23–42] we give a complete classification, up to isomorphism, of all indecomposable semiprime comultiplication modules with finite-dimensional top over a pullback of two valuation domains with the same residue field.
