EntityQ1485102· pop 13· linked from 68 articlessemisimple moduleSign in to savedirect sum of irreducible modulesConnectionsmoduleEntitycharacteristicEntityArtin–Wedderburn theoremEntitydirect sumEntitymathematicsEntityInternational Standard Book NumberEntitydigital object identifierEntityvector spaceEntityabstract algebraEntityOCLC, Inc.EntityringEntityfieldEntityabelian groupEntitycommutative ringEntitySpringer Science+Business MediaEntityhomological algebraEntitygroup representationEntitydivision ringEntityfinite groupEntityendomorphismEntityCategoriesModule theoryRing theory