proof
P13 Risk = Control − CCI
Lean spine source
formal/Capability.leanFrom the machine-checked spine in formal/ (Mathlib + spine imports). Not self-contained for Lean 4 Web — use the repo or a local lake build.
theorem P13_risk_gap_bounded_by_cci_slack
{A : System} {δ : Int}
(h : Control A ≤ CCI A + δ) :
RiskGap A ≤ δ := by
unfold RiskGap; omega