Let K[x] is the polynomial ring over the field K be a field and let F be a subfield of K. If F is a perfect field and f(x) in F[x] has no repeated irreducible factors in F[x]. Prove that f(x) has no repeated irreducible factors in K[x].
Let K[x] is the polynomial ring over the field K be a field and let F be a subfield of K. If F is a perfect field and f(x) in F[x] has no repeated irreducible factors in F[x]. Prove that f(x) has no repeated irreducible factors in K[x].
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter8: Polynomials
Section8.3: Factorization In F [x]
Problem 16E
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Let K[x] is the polynomial ring over the field K be a field and let F be a subfield of K. If F is a perfect field and f(x) in F[x] has no repeated irreducible factors in F[x]. Prove that f(x) has no repeated irreducible factors in K[x].
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