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4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
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15 include "basic_2/relocation/llpx_sn.ma".
17 (* LAZY SN POINTWISE EXTENSION OF A CONTEXT-SENSITIVE REALTION FOR TERMS ****)
19 definition llpx_sn_confluent: relation (lenv→relation term) ≝ λR1,R2.
20 ∀L0,T0,T1. R1 L0 T0 T1 → ∀T2. R2 L0 T0 T2 →
21 ∀L1. llpx_sn R1 0 T0 L0 L1 → ∀L2. llpx_sn R2 0 T0 L0 L2 →
22 ∃∃T. R2 L1 T1 T & R1 L2 T2 T.
24 (* Note: we miss llpx_sn_conf and derivatives: lpr_conf *)