Suppose K[x] splits in F as = (x - u 1 ) n1
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Suppose ∫ ϵ K[x] splits in F as ∫ = (x - u1)n1 • • • (x - uk)nk (ui distinct; ni ≥ 1). Let v0 , ••• , vk be the coefficients of the polynomial g = (x - u1)(.x - u2) ••• (x - uk) and let E = K(v0 , ••• vk). Then
(a) F is a splitting field of g over E.
(b) F is Galois over E.
(c) AutEF = AutKF.
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Related Book For
Algebra Graduate Texts In Mathematics 73
ISBN: 9780387905181
8th Edition
Authors: Thomas W. Hungerford
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