Nuprl Lemma : es-le-before-not-null
∀[es:EO]. ∀[e:E]. (null(≤loc(e)) ~ ff)
Proof
Definitions occuring in Statement :
es-le-before: ≤loc(e),
es-E: E,
event_ordering: EO,
null: null(as),
bfalse: ff,
uall: ∀[x:A]. B[x],
sqequal: s ~ t
Lemmas :
subtype_base_sq,
bool_wf,
bool_subtype_base,
iff_imp_equal_bool,
null_wf3,
append_wf,
es-E_wf,
es-before_wf,
cons_wf,
nil_wf,
subtype_rel_list,
top_wf,
bfalse_wf,
null_cons_lemma,
append_is_nil,
and_wf,
equal_wf,
list_wf,
null_nil_lemma,
btrue_wf,
btrue_neq_bfalse,
equal-wf-T-base,
false_wf,
assert_of_null,
assert_wf,
iff_wf,
event_ordering_wf
\mforall{}[es:EO]. \mforall{}[e:E]. (null(\mleq{}loc(e)) \msim{} ff)
Date html generated:
2015_07_17-AM-08_40_40
Last ObjectModification:
2015_01_27-PM-02_39_55
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