OAI/NumberTheory/CubicMoment/Theta/CubicThetaKubotaProduct.lean

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The coprime-column step of the Kubota multiplication law at level nine. It is proved from cubic reciprocity and the already discharged supplementary periodicity, not imposed as a new character input.

  1. lemma OAI.CubicFirstMoment.cubicThetaKubota_product_coprime line 11