matita/matita/contribs/lambdadelta/basic_2/relocation/lifts_weight.ma

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  14
  15 include "basic_2/grammar/term_weight.ma".
  16 include "basic_2/relocation/lifts.ma".
  17
  18 (* GENERIC RELOCATION FOR TERMS *********************************************)
  19
  20 (* Forward lemmas with weight for terms *************************************)
  21
  22 (* Basic_2A1: includes: lift_fwd_tw *)
  23 lemma lifts_fwd_tw: ∀f,T1,T2. ⬆*[f] T1 ≡ T2 → ♯{T1} = ♯{T2}.
  24 #f #T1 #T2 #H elim H -f -T1 -T2 normalize //
  25 qed-.