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Post Made Community Wiki by François G. Dorais♦
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If $A$ is a noetherian ring, then a ring homomorphism $f: A \to A$ is surjuctive surjective iff it is an isomorphism. See (see the accepted answer of this question. ) |
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If $A$ is a noetherian ring, then a ring homomorphism $f: A \to A$ is surjuctive iff it is an isomorphism. See the accepted answer of this question. |
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