{ [Info,A,B:Type]. [X:EClass(A)]. [Y:EClass(B)].
    ((X | Y)  EClass(one_or_both(A;B))) }

{ Proof }



Definitions occuring in Statement :  es-or-latest: (X | Y) eclass: EClass(A[eo; e]) uall: [x:A]. B[x] member: t  T universe: Type one_or_both: one_or_both(A;B)
Definitions :  latest-pair: (X&Y) es-interface-union: X+Y bool: subtype: S  T subtype_rel: A r B eq_atom: eq_atom$n(x;y) atom: Atom apply: f a top: Top es-base-E: es-base-E(es) token: "$token" eq_atom: x =a y ifthenelse: if b then t else f fi  record-select: r.x dep-isect: Error :dep-isect,  record+: record+ event_ordering: EO es-E: E event-ordering+: EO+(Info) lambda: x.A[x] all: x:A. B[x] bag: bag(T) function: x:A  B[x] axiom: Ax es-or-latest: (X | Y) product: x:A  B[x] union: left + right one_or_both: one_or_both(A;B) universe: Type uall: [x:A]. B[x] so_lambda: x y.t[x; y] eclass: EClass(A[eo; e]) isect: x:A. B[x] member: t  T equal: s = t tactic: Error :tactic,  Unfold: Error :Unfold,  CollapseTHEN: Error :CollapseTHEN
Lemmas :  latest-pair_wf es-interface-union_wf event-ordering+_wf event-ordering+_inc subtype_rel_self es-base-E_wf es-E_wf eclass_wf

\mforall{}[Info,A,B:Type].  \mforall{}[X:EClass(A)].  \mforall{}[Y:EClass(B)].    ((X  |\msupminus{}  Y)  \mmember{}  EClass(one\_or\_both(A;B)))


Date html generated: 2011_08_16-PM-05_36_47
Last ObjectModification: 2011_06_20-AM-01_28_26

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