Special and general types
The analog of group extensions for rings, classified by an analog of Schreier theory.
A classical textbook account is in paragraphs 52-54 of
- Rédei, Algebra (1954) (web).
A more modern account is in
- M. Petrich, Ideal extensions of rings, Acta Mathematica Hungaria, volume 45, numbers 3-4 (1985)
Created on June 20, 2012 15:05:24
by Urs Schreiber