OAI/LinearAlgebra/CirculantHadamard/CyclotomicTorsion.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

Kronecker's criterion in the actual alternating coefficient ring

The finite generator and root-of-unity hypotheses are discharged for the literal ring B u = ℤ[i, rho_p : p ∣ u]. The modulus-one hypothesis follows for alternating products by clearing the actual product denominator and evaluating the norm identities.

  1. theorem OAI.CirculantHadamard.B_root_of_unity line 17