Nuprl Lemma : accum-class_wf

[Info,A,B:Type]. ∀[X:EClass(A)]. ∀[b:A ─→ B]. ∀[f:B ─→ A ─→ B].  (accum-class(b,a.f[b;a];a.b[a];X) ∈ EClass(B))


Proof




Definitions occuring in Statement :  accum-class: accum-class(a,x.f[a; x];x.base[x];X) eclass: EClass(A[eo; e]) uall: [x:A]. B[x] so_apply: x[s1;s2] so_apply: x[s] member: t ∈ T function: x:A ─→ B[x] universe: Type
Lemmas :  in-eclass_wf es-interface-subtype_rel2 es-E_wf event-ordering+_subtype top_wf bool_wf eqtt_to_assert single-bag_wf accum_list_wf es-E-interface_wf Id_wf es-loc_wf eclass-val_wf assert_elim subtype_base_sq bool_subtype_base es-interface-predecessors_wf es-interface-predecessors-nonempty assert_wf eqff_to_assert equal_wf bool_cases_sqequal assert-bnot empty-bag_wf eclass_wf event-ordering+_wf

Latex:
\mforall{}[Info,A,B:Type].  \mforall{}[X:EClass(A)].  \mforall{}[b:A  {}\mrightarrow{}  B].  \mforall{}[f:B  {}\mrightarrow{}  A  {}\mrightarrow{}  B].
    (accum-class(b,a.f[b;a];a.b[a];X)  \mmember{}  EClass(B))



Date html generated: 2015_07_20-PM-03_48_23
Last ObjectModification: 2015_01_27-PM-10_09_34

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