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[Abstract Algebra] Maximal Ideal
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[QUOTE="cummings12332, post: 4287090, member: 446529"] [h2]Homework Statement [/h2] Let F be the field and f(x)=x-1,g(x)=x^2-1 and F[x]/(f(x)) is isomorphism to F, is it g(x) maximal?? [b]2. The attempt at a solution[/b] I will say no.Since g(x) is not 0, the dieal (x^2-1) in a prime idea domain F is maximal iff (x^2-1) is irreducible. And we say (x^2-1) is irreducible if it is not a unit, but x^2-1=(x+1)(x-1) implies that either (x+1) or (x-1) is a unit. but I can find a taylor expansion of 1/(x^2-1) which means (x^2-1) is a unit, contradicts irreducible is my idea right ? [/QUOTE]
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[Abstract Algebra] Maximal Ideal
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