Editing Skolem–Noether theorem (section)

{{Short description|Theorem characterizing the automorphisms of simple rings}}
In [[ring theory]], a branch of mathematics, the '''Skolem–Noether theorem''' characterizes the [[automorphism]]s of [[simple ring]]s. It is a fundamental result in the theory of [[central simple algebra]]s.

The theorem was first published by [[Thoralf Skolem]] in 1927 in his paper ''Zur Theorie der assoziativen Zahlensysteme'' ([[German language|German]]: ''On the theory of associative number systems'') and later rediscovered by [[Emmy Noether]].