An element of `O[X]/(Φ)` lies in `(m_O O_δ)^L` iff all its coordinates in the power basis lie in `m_O^L`.

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An element of `O[X]/(Φ)` lies in `(m_O O_δ)^L` iff all its coordinates in the power basis lie in `m_O^L`. · Prove2Me