My methods are really methods of working and thinking; this is why they have crept in everywhere anonymously.
A ring of polynomials in any number of variables over a ring of coeffcients that has an identity element and a finite basis, itself has a finite basis.
I obtained scientific guidance and stimulation mainly through personal mathematical contacts in Erlangen and in Gottingen. Above all I am indebted to Mr. E. Fischer from whom I received the decisive impulse to study abstract algebra from an arithmetical viewpoint, and this remained the governing idea for all my later work.