Nuprl Lemma : class-opt-class_wf
∀[Info,T:Type]. ∀[X,Y:EClass(T)].  (X?Y ∈ EClass(T))
Proof
Definitions occuring in Statement : 
class-opt-class: X?Y
, 
eclass: EClass(A[eo; e])
, 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
universe: Type
Lemmas : 
bag-null_wf, 
bool_wf, 
eqtt_to_assert, 
assert-bag-null, 
eqff_to_assert, 
equal_wf, 
bool_cases_sqequal, 
subtype_base_sq, 
bool_subtype_base, 
assert-bnot, 
equal-wf-T-base, 
bag_wf, 
es-E_wf, 
event-ordering+_subtype, 
eclass_wf, 
event-ordering+_wf
Latex:
\mforall{}[Info,T:Type].  \mforall{}[X,Y:EClass(T)].    (X?Y  \mmember{}  EClass(T))
Date html generated:
2015_07_21-PM-02_42_09
Last ObjectModification:
2015_01_27-PM-09_38_52
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