Radical d’un idéal

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8/16/2026, 10:44:12 AM · Ancient Tree

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8/16/2026, 10:43:46 AM · Ancient Tree

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Le radical d'un [[Ideal|idéal]] $I$ d'un anneau $A$ est l'ensemble :
$$\sqrt{I}=\left\{a \in A \mid \exists n \geq 1, a^n \in I\right\}.$$