matita/matita/contribs/lambdadelta/basic_2A/etc/llneq/llneq.etc

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  14
  15 include "basic_2/notation/relations/lazynegatedeq_4.ma".
  16 include "basic_2/substitution/lleq.ma".
  17
  18 (* NEGATED LAZY EQUIVALENCE FOR LOCAL ENVIRONMENTS **************************)
  19
  20 definition llneq: relation4 ynat term lenv lenv ≝
  21                   λd,T,L1,L2. |L1| = |L2| ∧ (L1 ⋕[T, d] L2 → ⊥).
  22
  23 interpretation
  24    "negated lazy equivalence (local environment)"
  25    'LazyNegatedEq T d L1 L2 = (llneq d T L1 L2).