proposition: Lemma tclosure_rsclosure_eq_rstclosure : forall R, tclosure (rsclosure R) = rstclosure R.
proof: Proof. Proof using. extens. intros x y. iff M. { induction* M. { applys* rstclosure_of_rsclosure. } } { induction* M. { applys* sym_inv. } } Qed.
imports: TLC(LibTactics LibLogic LibBool LibLogic LibProd LibSum)