-- Maclain Hunter: Knowing Logic and Proof — Full Supplied Copy
-- Exact authored source SHA-256: 980062ee1ccd709709aaede382742fefe25a971c740911484895ee7e30be0f72
-- Machine formalization by Replit Agent; authority below Logic/Logos/God.
import Lean
namespace HunterAuthored

theorem inference_1 (v0 v1 v2 v3 : Bool) :
    ((!(((v0 && ((!v0) || v1)) && ((!v1) || v2)) && ((!v2) || v3))) || ((!(v0 && v1)) || (v2 && v3))) = true := by
  cases v0 <;> cases v1 <;> cases v2 <;> cases v3 <;> decide
#print axioms inference_1

end HunterAuthored