Nuprl Lemma : Accum-class-single-val

∀[Info,A,B:Type]. ∀[es:EO+(Info)].
  ∀X:EClass(A)
    ∀[init:Id ⟶ bag(B)]. ∀[f:A ⟶ B ⟶ B].
      (single-valued-classrel(es;X;A)
      ⇒ (∀l:Id. single-valued-bag(init l;B))
      ⇒ single-valued-classrel(es;Accum-class(f;init;X);B))


Proof




Definitions occuring in Statement :  Accum-class: Accum-class(f;init;X),  single-valued-classrel: single-valued-classrel(es;X;T),  eclass: EClass(A[eo; e]),  event-ordering+: EO+(Info),  Id: Id,  uall: ∀[x:A]. B[x],  all: ∀x:A. B[x],  implies: P ⇒ Q,  apply: f a,  function: x:A ⟶ B[x],  universe: Type,  single-valued-bag: single-valued-bag(b;T),  bag: bag(T)
Definitions unfolded in proof :  Accum-class: Accum-class(f;init;X),  uall: ∀[x:A]. B[x],  member: t ∈ T,  uimplies: b supposing a,  so_lambda: λ2x.t[x],  so_apply: x[s],  prop: ℙ,  subtype_rel: A ⊆r B,  all: ∀x:A. B[x],  so_lambda: λ2x y.t[x; y],  so_apply: x[s1;s2],  implies: P ⇒ Q,  single-valued-classrel: single-valued-classrel(es;X;T)

Latex:
\mforall{}[Info,A,B:Type].  \mforall{}[es:EO+(Info)].
    \mforall{}X:EClass(A)
        \mforall{}[init:Id  {}\mrightarrow{}  bag(B)].  \mforall{}[f:A  {}\mrightarrow{}  B  {}\mrightarrow{}  B].
            (single-valued-classrel(es;X;A)
            {}\mRightarrow{}  (\mforall{}l:Id.  single-valued-bag(init  l;B))
            {}\mRightarrow{}  single-valued-classrel(es;Accum-class(f;init;X);B))



Date html generated: 2016_05_17-AM-09_31_46
Last ObjectModification: 2015_12_29-PM-04_00_36

Theory : classrel!lemmas


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