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Let be an ideal of a commutative Noetherian ring with identity and let and be two finitely generated -modules. Let be a positive integer. It is shown that is contained in the union of the sets , where . As an immediate consequence, it follows that if either is finitely generated for all or is finite for all , then is finite. Also, we prove that if and are finite, then is Artinian. In particular, is a finite set consisting of maximal ideals.

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