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theorem proved term proof

ledger_self_grounding

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formal statement (Lean)

 109theorem ledger_self_grounding : ledger_is_self_grounded := by

proof body

Term-mode proof.

 110  intro x hx
 111  exact Cost.Jcost_nonneg hx
 112
 113/-- **THEOREM IC-004.6**: The J-cost framework determines what "exists":
 114    x exists (RSExists) iff J(x) = 0 iff x = 1. -/

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