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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