Factoring of Prime Ideals in Galois Extensions
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چکیده
We return to the general AKLB setup: A is a Dedekind domain with fraction field K, L is a finite separable extension of K, and B is the integral closure of A in L. But now we add the condition that the extension L/K is normal, hence Galois. We will see shortly that the Galois assumption imposes a severe constraint on the numbers ei and fi in the ram-rel identity (4.1.6). Throughout this chapter, G will denote the Galois group Gal(L/K).
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