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    Prove that if a binary operation on an identity element

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    Please formally prove that if a binary operation * on a set X has an identity element e (element of) X , then it must be unique.

    Please submit response as a PDF or MS Word file.

    Infinite Thanks.

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    https://brainmass.com/math/discrete-math/prove-binary-operation-identity-element-457834

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    Prove that if a binary operation * on a set X has an identity element e∈X, then it must be unique.

    Let, if ...

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    The expert proves that if a binary operations on an identity element e.

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