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theorem proved term proof

completedXiSurface_symmetry_only_no_go

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formal statement (Lean)

  62theorem completedXiSurface_symmetry_only_no_go :
  63    ¬ (∀ Ξ : CompletedXiSurface, ∀ s : ℂ, Ξ.xi s = 0 → OnCriticalLine s) := by

proof body

Term-mode proof.

  64  intro h
  65  obtain ⟨hzero, hline⟩ := toyCompletedXiSurface_has_off_critical_zero
  66  exact hline (h toyCompletedXiSurface (3 / 4 : ℂ) hzero)
  67
  68/-- The negation-closed deviation-set property obtained from the functional
  69equation does not force `0` to be the only realized deviation. -/

depends on (5)

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