(* Constructions with gr_tls ************************************************)
(*** isdiv_tls *)
-lemma gr_isd_tls (n) (g): ð\9d\9b\80â\9dªgâ\9d« â\86\92 ð\9d\9b\80â\9dªâ«±*[n]g❫.
+lemma gr_isd_tls (n) (g): ð\9d\9b\80â\9dªgâ\9d« â\86\92 ð\9d\9b\80â\9dªâ«°*[n]g❫.
#n @(nat_ind_succ … n) -n /3 width=1 by gr_isd_tl/
qed.