theorem
proved
term proof
extracted_peanoSurface
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formal statement (Lean)
202theorem extracted_peanoSurface (R : LogicRealization) :
203 PeanoSurface (extracted R) where
204 zero_ne_step := R.orbit_no_confusion
proof body
Term-mode proof.
205 step_injective := R.orbit_step_injective
206 induction := R.orbit_induction
207
208/-- The natural equivalence between two initial Peano objects. -/