-- Maclain Hunter: Logic in Physics by Maclain Hunter -- Exact authored source SHA-256: 6cc5f4f0290bfc9ba71db5f95d77da7908852cd161be6d104e6bd43d489e334c -- Machine formalization by Replit Agent; authority below Logic/Logos/God. import Lean namespace HunterAuthored theorem source_identity_rule (α : Type) (a : α) : a = a := rfl #print axioms source_identity_rule end HunterAuthored