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theorem proved term proof

bookerCountLaw

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formal statement (Lean)

 123theorem bookerCountLaw :
 124    CountLaw 3 BookerPlotFamily plotEncoding where
 125  injective := plotEncoding_injective

proof body

Term-mode proof.

 126  nonzero := plotEncoding_image_nonzero
 127  surjective_on_nonzero := no_eighth_plot
 128
 129/-- Corollary: at `D = 3`, the count law gives `2 ^ 3 - 1 = 7`. -/

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