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4 (* ||A|| A project by Andrea Asperti *)
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15 include "ground/relocation/mr2_append.ma".
16 include "basic_2A/multiple/lifts_lift.ma".
18 (* GENERIC RELOCATION *******************************************************)
20 (* Main properties **********************************************************)
22 theorem lifts_trans: ∀T1,T,cs1. ⬆*[cs1] T1 ≡ T → ∀T2:term. ∀cs2. ⬆*[cs2] T ≡ T2 →
23 ⬆*[cs1 ● cs2] T1 ≡ T2.
24 #T1 #T #cs1 #H elim H -T1 -T -cs1 /3 width=3 by lifts_cons/