Nuprl Lemma : or-latest-val

[Info:Type]. ∀[es:EO+(Info)]. ∀[A,B:Type]. ∀[X:EClass(A)]. ∀[Y:EClass(B)]. ∀[e:E].
  (X |- Y)(e) ((X)- (Y)-)(e) ∈ one_or_both(A;B) supposing (↑e ∈b (X |- Y)) ∧ Singlevalued(X) ∧ Singlevalued(Y)


Proof




Definitions occuring in Statement :  es-or-latest: (X |- Y) es-latest-val: (X)- es-interface-or: (X Y) sv-class: Singlevalued(X) eclass-val: X(e) in-eclass: e ∈b X eclass: EClass(A[eo; e]) event-ordering+: EO+(Info) es-E: E assert: b uimplies: supposing a uall: [x:A]. B[x] and: P ∧ Q universe: Type equal: t ∈ T one_or_both: one_or_both(A;B)
Lemmas :  is-or-latest assert_wf in-eclass_wf es-or-latest_wf es-interface-subtype_rel2 es-E_wf event-ordering+_subtype top_wf subtype_top one_or_both_wf sv-class_wf eclass_wf event-ordering+_wf bool_wf eqtt_to_assert bag_size_single_lemma bag_only_single_lemma oobboth_wf eclass-val_wf eqff_to_assert equal_wf bool_cases_sqequal subtype_base_sq bool_subtype_base assert-bnot bag_size_empty_lemma primed-class_wf oobleft_wf squash_wf true_wf event-ordering+_cumulative2 primed-class-prior-val es-prior-val_wf iff_weakening_equal not_assert_elim and_wf assert_elim btrue_neq_bfalse oobright_wf

Latex:
\mforall{}[Info:Type].  \mforall{}[es:EO+(Info)].  \mforall{}[A,B:Type].  \mforall{}[X:EClass(A)].  \mforall{}[Y:EClass(B)].  \mforall{}[e:E].
    (X  |\msupminus{}  Y)(e)  =  ((X)\msupminus{}  |  (Y)\msupminus{})(e)  supposing  (\muparrow{}e  \mmember{}\msubb{}  (X  |\msupminus{}  Y))  \mwedge{}  Singlevalued(X)  \mwedge{}  Singlevalued(Y)



Date html generated: 2015_07_21-PM-04_21_56
Last ObjectModification: 2015_02_04-PM-06_07_50

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