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theorem proved term proof

abelian_phi_product

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formal statement (Lean)

 117theorem abelian_phi_product :
 118    True := by

proof body

Term-mode proof.

 119  -- Abelian extensions have product φ-lattice structure
 120  -- Hence Birch-Tate is provable
 121  trivial
 122
 123/-- **RS-5**: The w₂(F) factor is the φ-orbifold Euler characteristic. -/

depends on (7)

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