A Theorem of Harrison, Kummer Theory, and Galois Algebras
A Theorem of Harrison, Kummer Theory, and Galois Algebras
Let R be a field and S a separable algebraic closure of R with galois group R . In [8] Harrison succeeded in describing R / ′ R in terms of R only. More precisely, he constructed a certain complex ( R, Q/Z ) and proved Hom c , where …