matita/matita/contribs/lambda_delta/basic_2/reducibility/ltpr_ldrop.ma

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  14
  15 include "basic_2/substitution/ldrop_lpx.ma".
  16 include "basic_2/reducibility/tpr_lift.ma".
  17 include "basic_2/reducibility/ltpr.ma".
  18
  19 (* CONTEXT-FREE PARALLEL REDUCTION ON LOCAL ENVIRONMENTS ********************)
  20
  21 (* Basic_1: was: wcpr0_drop *)
  22 lemma ltpr_ldrop_conf: dropable_sn ltpr.
  23 /3 width=3 by lpx_deliftable_dropable, tpr_inv_lift1/ qed.
  24
  25 (* Basic_1: was: wcpr0_drop_back *)
  26 lemma ldrop_ltpr_trans: dedropable_sn ltpr.
  27 /2 width=3/ qed.
  28
  29 lemma ltpr_ldrop_trans_O1: dropable_dx ltpr.
  30 /2 width=3/ qed.