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theorem proved term proof

diverge_impossible

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formal statement (Lean)

 185theorem diverge_impossible (c : ℝ) : ¬RSDiverge c := by

proof body

Term-mode proof.

 186  intro h
 187  -- RSDiverge c says ∀ C, defect c > C
 188  -- Take C = defect c
 189  have : defect c > defect c := h (defect c)
 190  linarith
 191
 192/-- Every real configuration is either RSStab or RSOutside (never RSDiverge). -/

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