Galois Theory for Rings with Finitely Many Idempotents
Galois Theory for Rings with Finitely Many Idempotents
In [5], Chase, Harrison and Rosenberg proved the Fundamental Theorem of Galois Theory for commutative ring extensions S ⊃ R under two hypotheses: (i) 5 (and hence R ) has no idempotents except 0 and l; and (ii) 5 is Galois over R with respect to a finite group G— …