13C99 3 16D80 3 reduced ring 3 03D20 2 03D25 2 03D30 2 05C25 2 05C99 2 13A15 2 15A30 2 15B33 2 2-monomial matrix 2 621.313.333 2 Hadoop 2 Jacobson radical 2 Rickart modules 2 abelian modules 2 bounded reducibilities 2 commutative ring 2 cylinder 2 degrees of unsolvability 2 essential graph 2 free module 2 hereditary reducible matrix 2 indecomposable degree 2 induction motor 2 linear operator 2 principally projective modules 2 reduced modules 2 reducer 2