Ivan Shishkin, Birch Grove

Radical d’un idéal

Definition / General algebra /

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Le radical d’un idéal II d’un anneau AA est l’ensemble :
I={a∈A∣∃n≥1,an∈I}.\sqrt{I}=\left\{a \in A \mid \exists n \geq 1, a^n \in I\right\}.

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