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15 include "lambda-delta/syntax/weight.ma".
16 include "lambda-delta/substitution/lift_defs.ma".
18 (* RELOCATION ***************************************************************)
20 lemma tw_lift: ∀d,e,T1,T2. ↑[d, e] T1 ≡ T2 → #T1 = #T2.
21 #d #e #T1 #T2 #H elim H -d e T1 T2 normalize //