]
qed-.
-lemma unwind2_rmap_append_L_closed_dx_nap (f) (p) (q) (n):
+lemma unwind2_rmap_append_closed_Lq_dx_nap (f) (p) (q) (n):
q ϵ 𝐂❨n❩ →
▶[f](𝗟◗q)@§❨n❩ = ▶[f](p●𝗟◗q)@§❨n❩.
#f #p #q #n #Hq
<unwind2_rmap_d_dx <tr_compose_nap //
qed-.
-lemma unwind2_rmap_append_closed_nap (f) (p) (q) (n):
+lemma unwind2_rmap_append_closed_Lq_dx_nap_depth (f) (p) (q) (n):
q ϵ 𝐂❨n❩ →
♭q = ▶[f](p●𝗟◗q)@§❨n❩.
#f #p #q #n #Hq
-<unwind2_rmap_append_L_closed_dx_nap //
+<unwind2_rmap_append_closed_Lq_dx_nap //
/2 width=1 by unwind2_rmap_push_closed_nap/
qed-.
]
qed-.
-lemma tls_succ_unwind2_rmap_append_L_closed_dx (f) (p) (q) (n):
+lemma tls_succ_unwind2_rmap_append_closed_Lq_dx (f) (p) (q) (n):
q ϵ 𝐂❨n❩ →
▶[f]p ≗ ⇂*[↑n]▶[f](p●𝗟◗q).
/2 width=1 by tls_succ_plus_unwind2_rmap_push_closed/
qed-.
+
+lemma unwind2_rmap_append_closed_Lq_dx_nap_plus (f) (p) (q) (m) (n):
+ q ϵ 𝐂❨n❩ →
+ ▶[f]p@❨m❩+♭q = ▶[f](p●𝗟◗q)@§❨m+n❩.
+#f #p #q #m #n #Hq
+<tr_nap_plus @eq_f2
+[ <(tr_xap_eq_repl … (tls_succ_unwind2_rmap_append_closed_Lq_dx …)) //
+| /2 width=1 by unwind2_rmap_append_closed_Lq_dx_nap_depth/
+]
+qed-.