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April 29th, 2009, 08:42 PM   #1
Joined: Dec 2008

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finitely generated ideal, idempotent

Let be a finitely generated ideal such that . Prove that is principal and generated by an idempotent.

This looks like a straightforward question, but I do not know how to prove this is principal or how this is generated by an idempotent. How should I go about showing this?
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finitely, generated, ideal, idempotent

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