With her paper Moduln in nichtkommutativen Bereichen, insbesondere aus Differential- und Differenzenausdrücken, Hermann Weyl states, "It is here for the first time that the Emmy Noether appears whom we all know, and who changed the face of algebra by her work."
2), 104 || |- | 29 || 1925 || Gruppencharaktere und Idealtheorie | Jahresbericht der Deutschen Mathematiker-Vereinigung, 34 (Abt.
|- | 31 || 1926 || Abstrakter Aufbau der Idealtheorie in algebraischen Zahl- und Funktionenkörpern | Mathematische Annalen, 96, 26–61 || Ideals.
Seminal paper in which Noether determined the minimal set of conditions required that a primary ideal be representable as a power of prime ideals, as Richard Dedekind had done for algebraic numbers.
|} In the third epoch, Emmy Noether focused on non-commutative algebras, and unified much earlier work on the representation theory of groups.