Nuprl Lemma : disjoint-union-class_wf
∀[Info,A,B:Type]. ∀[X:EClass(A)]. ∀[Y:EClass(B)].  (X + Y ∈ EClass(A + B))
Proof
Definitions occuring in Statement : 
disjoint-union-class: X + Y
, 
eclass: EClass(A[eo; e])
, 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
union: left + right
, 
universe: Type
Lemmas : 
simple-comb-2_wf, 
bag-null_wf, 
bool_wf, 
eqtt_to_assert, 
assert-bag-null, 
bag-map_wf, 
eqff_to_assert, 
equal_wf, 
bool_cases_sqequal, 
subtype_base_sq, 
bool_subtype_base, 
assert-bnot, 
equal-wf-T-base, 
bag_wf, 
eclass_wf, 
es-E_wf, 
event-ordering+_subtype, 
event-ordering+_wf
Latex:
\mforall{}[Info,A,B:Type].  \mforall{}[X:EClass(A)].  \mforall{}[Y:EClass(B)].    (X  +  Y  \mmember{}  EClass(A  +  B))
Date html generated:
2015_07_22-PM-00_14_21
Last ObjectModification:
2015_01_28-AM-10_45_37
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