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4 (* ||A|| A project by Andrea Asperti *)
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7 (* ||T|| The HELM team. *)
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15 include "static_2/syntax/cext2.ma".
16 include "basic_2/rt_transition/cpx.ma".
18 (* UNBOUND CONTEXT-SENSITIVE PARALLEL RT-TRANSITION FOR BINDERS *************)
20 definition cpx_ext (h) (G): relation3 lenv bind bind ≝
24 "unbound context-sensitive parallel rt-transition (binder)"
25 'PRedTy h G L I1 I2 = (cpx_ext h G L I1 I2).