Nuprl Lemma : es-interface-or-left_wf
∀[Info,A,B:Type]. ∀[X:EClass(one_or_both(A;B))].  (es-interface-or-left(X) ∈ EClass(A))
Proof
Definitions occuring in Statement : 
es-interface-or-left: es-interface-or-left(X)
, 
eclass: EClass(A[eo; e])
, 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
universe: Type
, 
one_or_both: one_or_both(A;B)
Lemmas : 
es-filter-image_wf, 
one_or_both_wf, 
oob-getleft?_wf, 
eclass_wf, 
es-E_wf, 
event-ordering+_subtype, 
event-ordering+_wf
Latex:
\mforall{}[Info,A,B:Type].  \mforall{}[X:EClass(one\_or\_both(A;B))].    (es-interface-or-left(X)  \mmember{}  EClass(A))
Date html generated:
2015_07_20-PM-03_24_40
Last ObjectModification:
2015_01_27-PM-10_20_12
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