15A21 15A23 1 15A24 1 15A30 1 15A33 1 15B33 1 16G60 1 16S50 1 Brauer-Thrall conjectures 1 Jordan type 1 Kaplansky’s test problem 1 bundle of semichains 1 canonical diagonal form 1 collection of matrices 1 common divisors 1 commutative ring 1 completed poset 1 endo-wild representation type 1 equivalent matrices modulo an ideal 1 generalized equivalence 1 matrix polynomial equation 1 perfect \((I,J)\)-matrix 1 polynomial and non-polynomial growth 1 polynomial matrix 1 prime element 1 prinjective modules 1 pure semisimple rings 1 representation 1 semiscalar equivalence 1 solution 1