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Ring Theory Question

  1. Aug 23, 2011 #1
    Suppose that there is an integer n>1, such that an=a for all elements of some ring. If m is a positive integer and am=0 for some a , then I have to show that a=0. Please suggest.
  2. jcsd
  3. Aug 23, 2011 #2


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    hi mehtamonica! :wink:

    if m ≤ n, it's obvious

    and for m > n … ? :smile:
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