Nuprl Lemma : destructor_wf
∀[F:Type ⟶ Type]. (destructor{i:l}(T.F[T]) ∈ 𝕌')
Proof
Definitions occuring in Statement : 
destructor: destructor{i:l}(T.F[T])
, 
uall: ∀[x:A]. B[x]
, 
so_apply: x[s]
, 
member: t ∈ T
, 
function: x:A ⟶ B[x]
, 
universe: Type
Definitions unfolded in proof : 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
destructor: destructor{i:l}(T.F[T])
, 
so_apply: x[s]
, 
so_lambda: λ2x.t[x]
Lemmas referenced : 
subtype_rel_wf, 
base_wf, 
decomp_wf
Rules used in proof : 
sqequalSubstitution, 
sqequalTransitivity, 
computationStep, 
sqequalReflexivity, 
isect_memberFormation, 
introduction, 
cut, 
sqequalRule, 
isectEquality, 
setEquality, 
universeEquality, 
cumulativity, 
lemma_by_obid, 
sqequalHypSubstitution, 
isectElimination, 
thin, 
hypothesisEquality, 
hypothesis, 
functionEquality, 
applyEquality, 
setElimination, 
rename, 
lambdaEquality, 
axiomEquality, 
equalityTransitivity, 
equalitySymmetry
Latex:
\mforall{}[F:Type  {}\mrightarrow{}  Type].  (destructor\{i:l\}(T.F[T])  \mmember{}  \mBbbU{}')
Date html generated:
2016_05_15-PM-06_56_49
Last ObjectModification:
2015_12_27-AM-11_39_39
Theory : general
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