Nuprl Lemma : void-value-type
value-type(Void)
Proof
Definitions occuring in Statement :
value-type: value-type(T),
void: Void
Definitions unfolded in proof :
value-type: value-type(T),
uall: ∀[x:A]. B[x],
uimplies: b supposing a,
member: t ∈ T,
sq_stable: SqStable(P),
implies: P ⇒ Q,
all: ∀x:A. B[x],
prop: ℙ,
squash: ↓T
Lemmas referenced :
sq_stable__has-value,
equal_wf,
equal-wf-base,
base_wf
Rules used in proof :
sqequalSubstitution,
sqequalTransitivity,
computationStep,
sqequalReflexivity,
isect_memberFormation,
cut,
introduction,
extract_by_obid,
sqequalHypSubstitution,
isectElimination,
thin,
hypothesisEquality,
hypothesis,
independent_functionElimination,
equalityTransitivity,
equalitySymmetry,
voidEquality,
lambdaFormation,
voidElimination,
dependent_functionElimination,
sqequalRule,
imageMemberEquality,
baseClosed,
imageElimination,
because_Cache
Latex:
value-type(Void)
Date html generated:
2017_04_14-AM-07_14_46
Last ObjectModification:
2017_02_27-PM-02_50_19
Theory : call!by!value_1
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