other

PCID

Lean spine source

Declarations: cid_incentive_not_abstraction_invariant

From 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 cid_incentive_not_abstraction_invariant :
    ∃ a : Bool, ToyCIDNoMicroIncentive a ∧ ¬ ToyCIDNoMacroIncentive a :=
  ⟨false, trivial, by decide⟩

/-- C-ADV (P36): a distinguishing handle operation refines identification. -/