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: 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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