Define φ : Z[ √ 2] → Z[ √ 2] defined by φ(a + b √...

Define φ : Z[ √ 2] → Z[ √ 2] defined by φ(a + b √ 2) = a − b √ 2 for all a, b ∈ R is an automorphism of rings.

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Colby Messinger answered 1 year ago

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