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basic_2: stronger supclosure allows better inversion lemmas
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14
15 include "basic_2/relocation/lexs_length.ma".
16 include "basic_2/static/lfxs.ma".
17
18 (* GENERIC EXTENSION ON REFERRED ENTRIES OF A CONTEXT-SENSITIVE REALTION ****)
19
20 (* Forward lemmas with length for local environments ************************)
21
22 lemma lfxs_fwd_length: ∀R,L1,L2,T. L1 ⦻*[R, T] L2 → |L1| = |L2|.
23 #R #L1 #L2 #T * /2 width=4 by lexs_fwd_length/
24 qed-.