include "ground/relocation/gr_tl_eq.ma".
include "ground/relocation/gr_coafter.ma".
-(* RELATIONAL CO-COMPOSITION FOR GENERIC RELOCATION MAPS ***********************************************************)
+(* RELATIONAL CO-COMPOSITION FOR GENERIC RELOCATION MAPS ********************)
-(* Properties with gr_eq *)
+(* Constructions with gr_eq *************************************************)
(*** coafter_eq_repl_back2 *)
corec lemma gr_coafter_eq_repl_back_sn: