Nuprl Lemma : RankEx2_UnionList_wf
∀[S,T:Type]. ∀[unionlist:T + (RankEx2(S;T) List)].  (RankEx2_UnionList(unionlist) ∈ RankEx2(S;T))
Proof
Definitions occuring in Statement : 
RankEx2_UnionList: RankEx2_UnionList(unionlist)
, 
RankEx2: RankEx2(S;T)
, 
list: T List
, 
uall: ∀[x:A]. B[x]
, 
member: t ∈ T
, 
union: left + right
, 
universe: Type
Lemmas : 
RankEx2co-ext, 
subtype_rel_sum, 
list_wf, 
RankEx2co_wf, 
subtype_rel_list, 
eq_atom_wf, 
bool_wf, 
eqff_to_assert, 
equal_wf, 
bool_cases_sqequal, 
subtype_base_sq, 
bool_subtype_base, 
assert-bnot, 
neg_assert_of_eq_atom, 
eqtt_to_assert, 
assert_of_eq_atom, 
add_nat_wf, 
false_wf, 
le_wf, 
sum-nat, 
length_wf_nat, 
RankEx2_size_wf, 
select_wf, 
sq_stable__le, 
int_seg_wf, 
length_wf, 
nat_wf, 
value-type-has-value, 
set-value-type, 
int-value-type, 
has-value_wf-partial, 
RankEx2co_size_wf, 
RankEx2_wf
\mforall{}[S,T:Type].  \mforall{}[unionlist:T  +  (RankEx2(S;T)  List)].    (RankEx2\_UnionList(unionlist)  \mmember{}  RankEx2(S;T))
Date html generated:
2015_07_17-AM-07_49_22
Last ObjectModification:
2015_01_27-AM-09_37_48
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