{ [Info,A,B:Type]. [P:A  ]. [f:A  B]. [X:EClass(A)].
    ((f[v] where v from X such that P[v])  EClass(B)) }

{ Proof }



Definitions occuring in Statement :  mapfilter-class: (f[v] where v from X such that P[v]) eclass: EClass(A[eo; e]) bool: uall: [x:A]. B[x] so_apply: x[s] member: t  T function: x:A  B[x] universe: Type
Definitions :  empty-bag: {} single-bag: {x} bag: bag(T) ifthenelse: if b then t else f fi  es-filter-image: f[X] subtype: S  T event_ordering: EO es-E: E event-ordering+: EO+(Info) lambda: x.A[x] all: x:A. B[x] axiom: Ax apply: f a so_apply: x[s] mapfilter-class: (f[v] where v from X such that P[v]) equal: s = t universe: Type bool: function: x:A  B[x] uall: [x:A]. B[x] isect: x:A. B[x] member: t  T eclass: EClass(A[eo; e]) so_lambda: x y.t[x; y]
Lemmas :  eclass_wf es-E_wf event-ordering+_inc event-ordering+_wf bool_wf es-filter-image_wf ifthenelse_wf bag_wf single-bag_wf empty-bag_wf

\mforall{}[Info,A,B:Type].  \mforall{}[P:A  {}\mrightarrow{}  \mBbbB{}].  \mforall{}[f:A  {}\mrightarrow{}  B].  \mforall{}[X:EClass(A)].
    ((f[v]  where  v  from  X  such  that  P[v])  \mmember{}  EClass(B))


Date html generated: 2011_08_16-PM-04_13_53
Last ObjectModification: 2011_06_20-AM-00_43_55

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