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4 (* ||A|| A project by Andrea Asperti *)
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15 include "lambda/terms/term.ma".
17 (* ITERATED ABSTRACTION *****************************************************)
19 let rec abst d M on d ≝ match d with
24 interpretation "iterated abstraction (term)"
25 'AnnotatedAbstraction d M = (abst d M).
27 lemma abst_plus: ∀A,m,n. 𝛌m+n.A = 𝛌m.𝛌n.A.
28 #A #m elim m -m normalize //