include "ground/relocation/gr_tl.ma".
include "ground/relocation/gr_isu.ma".
-(* UNIFORMITY CONDITION FOR GENERIC RELOCATION MAPS ***********************************************************)
+(* UNIFORMITY CONDITION FOR GENERIC RELOCATION MAPS *************************)
-(* Properties with tail *****************************************************)
+(* Constructions with gr_tl *************************************************)
-lemma gr_isu_tl (f): ð\9d\90\94â\9dªfâ\9d« â\86\92 ð\9d\90\94â\9dªâ«±f❫.
+lemma gr_isu_tl (f): ð\9d\90\94â\9dªfâ\9d« â\86\92 ð\9d\90\94â\9dªâ«°f❫.
#f cases (gr_map_split_tl f) * #H
[ /3 width=3 by gr_isu_inv_push, gr_isu_isi/
| /2 width=3 by gr_isu_inv_next/
]
qed.
-(* Advanced inversion lemmas ***************************************************)
+(* Advanced inversions ******************************************************)
(*** isuni_split *)
lemma gr_isu_split (g): 𝐔❪g❫ → ∨∨ (∃∃f. 𝐈❪f❫ & ⫯f = g) | (∃∃f.𝐔❪f❫ & ↑f = g).