include "ground/relocation/gr_tl_eq.ma".
include "ground/relocation/gr_after.ma".
-(* RELATIONAL COMPOSITION FOR GENERIC RELOCATION MAPS ***********************************************************)
+(* RELATIONAL COMPOSITION FOR GENERIC RELOCATION MAPS ***********************)
-(* Properties with gr_eq *)
+(* Constructions with gr_eq *************************************************)
(*** after_eq_repl_back2 *)
corec lemma gr_after_eq_repl_back_sn: