EntityQ6454025· pop 5· linked from 12 articlesKöthe conjectureSign in to saveopen Problem in Ring Theory (Mathematics)ConnectionsidealEntitymathematicsEntitymathematical proofEntitydigital object identifierEntitymatrixEntitypolynomialEntityringEntitycoefficientEntityconjectureEntityring theoryEntityQ22908627EntitycounterexampleEntitypolynomial ringEntitynoetherian ringEntitysubringEntityJacobson radicalEntityopen problemEntityAgata SmoktunowiczEntityGottfried KötheEntityTsit Yuen LamEntityCategoriesConjecturesRing theoryUnsolved problems in mathematics