Indecomposable modules over pure semisimple hereditary rings. (Q1952158)

The authors study left pure semisimple hereditary indecomposable rings \(R\) of infinite representation type and determine all indecomposable left \(R\)-modules that are not sources of left almost split morphisms in \(R\)-mod. They use an Ext-injective partition of the family of all finitely generated indecomposable left \(R\)-modules to give a complete description of the distribution of all indecomposable modules over a left pure semisimple hereditary indecomposable ring \(R\) of infinite representation type.