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theorem proved term proof

C_kernel_pos

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formal statement (Lean)

 115theorem C_kernel_pos : 0 < C_kernel := by

proof body

Term-mode proof.

 116  rw [C_kernel_eq_two_minus_phi]
 117  have h := phi_lt_two
 118  linarith
 119
 120/-- `C < 1/2` (strictly less than the half-rung budget). -/

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depends on (15)

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