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Enumeration Ten Distinct B

Abstract

Period-ten phase codes have no duplicates inside a group and no overlap between two groups.

Forty-five statements across two modules: nine saying the codes inside a group of five are distinct, and thirty-six saying two different groups share no code. Grouping by five is forced by normalisation cost, not chosen for style.

Theorem 1.1 (Two period-ten groups share no code).

Proof. Machine-checked in Lean as D5/S0/Tower/TribonacciPeriodicTen/EnumerationTenDistinctB.tribonacci_period_ten_third_seventh_state_codes_disjoint (✓ std3). ∎

Source. Repository-derived.

Commentary.

Assembling the components into a single statement over the whole list is not done here, for the same reason it was left at period nine, and remains open.

References