Nuprl Lemma : exception-type_wf
∀[T:Type]. (exception-type(T) ∈ Type)
Proof
Definitions occuring in Statement :
exception-type: exception-type(T),
uall: ∀[x:A]. B[x],
member: t ∈ T,
universe: Type
Definitions unfolded in proof :
uall: ∀[x:A]. B[x],
member: t ∈ T,
exception-type: exception-type(T),
uimplies: b supposing a,
prop: ℙ,
so_lambda: λ2x.t[x],
so_apply: x[s]
Lemmas referenced :
base_wf,
isect_wf,
equal-wf-base,
is-exception_wf,
uall_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation,
introduction,
cut,
sqequalHypSubstitution,
hypothesis,
sqequalRule,
axiomEquality,
equalityTransitivity,
equalitySymmetry,
universeEquality,
lemma_by_obid,
isectElimination,
thin,
hypothesisEquality,
because_Cache,
lambdaEquality
Latex:
\mforall{}[T:Type]. (exception-type(T) \mmember{} Type)
Date html generated:
2016_05_13-PM-03_24_37
Last ObjectModification:
2015_12_26-AM-09_29_55
Theory : call!by!value_1
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