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- first properties of strongly normalizing terms
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14
15 include "Basic_2/grammar/lenv.ma".
16
17 (* LENGTH OF A LOCAL ENVIRONMENT ********************************************)
18
19 let rec length L ≝ match L with
20 [ LAtom       ⇒ 0
21 | LPair L _ _ ⇒ length L + 1
22 ].
23
24 interpretation "length (local environment)" 'card L = (length L).