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Math Help - Prove that an algebraic integer is a unit in Z(a)

  1. #1
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    Prove that an algebraic integer is a unit in Z(a)


    I'm completely stuck here, can anyone help me?
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  2. #2
    MHF Contributor

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    Re: Prove that an algebraic integer is a unit in Z(a)

    What is the definition of "unit"?
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  3. #3
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    Re: Prove that an algebraic integer is a unit in Z(a)

    As I understand your question, this is a solution:

    Prove that an algebraic integer is a unit in Z(a)-mhfrings.png
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