Let F be an algebraic closure of Z P (p prime). (a) F is algebraic Galois over
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Let F be an algebraic closure of ZP (p prime).
(a) F is algebraic Galois over ZP.
(b) The map φ: F→ F given by u| → uP is a nonidentity Zp-automorphism of F.
(c) The subgroup H = (φ) is a proper subgroup of AutzpF whose fixed field is Zp, which is also the fixed field of AutzPF by (a).
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a Let Zpx be an irreducible polynomial with a root u F Since F is algebraic over Zp u is also algebraic over Zp By the theorem of finite fields the ex...View the full answer
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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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