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lemma proved term proof

alphaLock_pos

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formal statement (Lean)

 228lemma alphaLock_pos : 0 < alphaLock := by

proof body

Term-mode proof.

 229  have hphi := one_lt_phi
 230  unfold alphaLock
 231  have : 1 / phi < 1 := (div_lt_one phi_pos).mpr hphi
 232  linarith
 233

used by (11)

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depends on (5)

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