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4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
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11 (* v GNU General Public License Version 2 *)
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15 include "ground/relocation/pr_tl_eq.ma".
16 include "ground/relocation/pr_tls.ma".
18 (* ITERATED TAIL FOR PARTIAL RELOCATION MAPS ********************************)
20 (* Constructions with pr_eq *************************************************)
23 lemma pr_tls_eq_repl (n):
24 pr_eq_repl (λf1,f2. ⫰*[n] f1 ≡ ⫰*[n] f2).
25 #n @(nat_ind_succ … n) -n /3 width=1 by pr_tl_eq_repl/