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theorem proved term proof

boundary_unreachable

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formal statement (Lean)

 266theorem boundary_unreachable :
 267    ∀ c : Config, c.value ≠ 0 := by

proof body

Term-mode proof.

 268  intro c
 269  exact ne_of_gt c.pos
 270
 271/-! ## Summary -/
 272
 273/-- Status report for Modal Geometry module. -/

depends on (5)

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