< Achter Kreisteilungsring < Faktoriell < Normschranke
Zeige, dass der achte Kreisteilungsring faktoriell
ist.![{\displaystyle {}R_{8}=\mathbb {Z} [X]/(X^{4}+1)}](../../../../I/c4207c963b73741765a60315f7da143baa16f193.svg)
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