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theorem proved term proof

fermi_den_pos

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formal statement (Lean)

  61private theorem fermi_den_pos : 0 < Real.sqrt 2 * vev_canonical ^ 2 := by

proof body

Term-mode proof.

  62  have hv : 0 < vev_canonical ^ 2 := sq_pos_of_ne_zero (ne_of_gt vev_canonical_pos)
  63  nlinarith [sqrt2_pos, hv]
  64

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depends on (3)

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