Nuprl Lemma : es-interface-history-first
∀[Info:Type]. ∀[es:EO+(Info)]. ∀[A:Type]. ∀[X:EClass(A List)]. ∀[e:E].
  es-interface-history(es;X;e) = if e ∈b X then X(e) else [] fi  ∈ (A List) supposing ↑first(e)
Proof
Definitions occuring in Statement : 
es-interface-history: es-interface-history(es;X;e), 
eclass-val: X(e), 
in-eclass: e ∈b X, 
eclass: EClass(A[eo; e]), 
event-ordering+: EO+(Info), 
es-first: first(e), 
es-E: E, 
nil: [], 
list: T List, 
assert: ↑b, 
ifthenelse: if b then t else f fi , 
uimplies: b supposing a, 
uall: ∀[x:A]. B[x], 
universe: Type, 
equal: s = t ∈ T
Lemmas : 
assert_wf, 
es-first_wf2, 
event-ordering+_subtype, 
es-E_wf, 
eclass_wf, 
list_wf, 
event-ordering+_wf, 
bool_wf, 
list_ind_nil_lemma, 
equal-wf-T-base, 
bnot_wf, 
not_wf, 
eqtt_to_assert, 
uiff_transitivity, 
eqff_to_assert, 
assert_of_bnot, 
filter_cons_lemma, 
filter_nil_lemma, 
in-eclass_wf, 
es-interface-subtype_rel2, 
top_wf, 
subtype_top, 
map_cons_lemma, 
map_nil_lemma, 
concat-single, 
eclass-val_wf, 
subtype_rel_list, 
nil_wf
Latex:
\mforall{}[Info:Type].  \mforall{}[es:EO+(Info)].  \mforall{}[A:Type].  \mforall{}[X:EClass(A  List)].  \mforall{}[e:E].
    es-interface-history(es;X;e)  =  if  e  \mmember{}\msubb{}  X  then  X(e)  else  []  fi    supposing  \muparrow{}first(e)
Date html generated:
2015_07_20-PM-03_39_11
Last ObjectModification:
2015_01_27-PM-10_13_50
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