Nuprl Lemma : es-first-init
∀[es:EO]. ∀[e:E].  (first(es-init(es;e)) ~ tt)
Proof
Definitions occuring in Statement : 
es-init: es-init(es;e)
, 
es-first: first(e)
, 
es-E: E
, 
event_ordering: EO
, 
btrue: tt
, 
uall: ∀[x:A]. B[x]
, 
sqequal: s ~ t
Lemmas : 
subtype_base_sq, 
bool_wf, 
bool_subtype_base, 
es-E_wf, 
event_ordering_wf, 
equal-wf-T-base, 
es-first_wf2, 
es-init_wf, 
eqtt_to_assert, 
iff_imp_equal_bool, 
assert_wf, 
true_wf, 
uiff_transitivity, 
bnot_wf, 
not_wf, 
eqff_to_assert, 
assert_of_bnot, 
es-pred_wf, 
es-pred-locl, 
iff_weakening_equal, 
all_wf, 
es-locl_wf, 
es-locl-wellfnd
\mforall{}[es:EO].  \mforall{}[e:E].    (first(es-init(es;e))  \msim{}  tt)
Date html generated:
2015_07_17-AM-08_45_08
Last ObjectModification:
2015_02_04-AM-07_10_42
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