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4 (* ||A|| A project by Andrea Asperti *)
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15 include "ground/arith/nat_pred_succ.ma".
16 include "ground/relocation/pr_nexts.ma".
17 include "ground/relocation/tr_map.ma".
19 (* TOTAL RELOCATION MAPS ****************************************************)
21 (* Advanced constructions with pr_nexts *************************************)
23 lemma tr_inj_unfold (f):
24 ∀p. ↑*[↓p]⫯𝐭❨f❩ = 𝐭❨p⨮f❩.
28 lemma tr_inj_fold (f):
29 ∀p. 𝐭❨p⨮f❩ = ↑*[↓p]⫯𝐭❨f❩.