Nuprl Lemma : iterated_classrel-exists-iff
∀[Info,A,S:Type]. ∀[init:Id ─→ bag(S)]. ∀[f:A ─→ S ─→ S]. ∀[X:EClass(A)]. ∀[es:EO+(Info)]. ∀[e:E].
  uiff(↓∃s:S. s ↓∈ init loc(e);↓∃v:S. iterated_classrel(es;S;A;f;init;X;e;v))
Proof
Definitions occuring in Statement : 
iterated_classrel: iterated_classrel(es;S;A;f;init;X;e;v)
, 
eclass: EClass(A[eo; e])
, 
event-ordering+: EO+(Info)
, 
es-loc: loc(e)
, 
es-E: E
, 
Id: Id
, 
uiff: uiff(P;Q)
, 
uall: ∀[x:A]. B[x]
, 
exists: ∃x:A. B[x]
, 
squash: ↓T
, 
apply: f a
, 
function: x:A ─→ B[x]
, 
universe: Type
, 
bag-member: x ↓∈ bs
, 
bag: bag(T)
Lemmas : 
iterated_classrel-exists, 
squash_wf, 
exists_wf, 
bag-member_wf, 
es-loc_wf, 
event-ordering+_subtype, 
es-causl-swellfnd, 
nat_properties, 
less_than_transitivity1, 
less_than_irreflexivity, 
ge_wf, 
less_than_wf, 
iterated_classrel_wf, 
int_seg_wf, 
int_seg_subtype-nat, 
decidable__le, 
subtract_wf, 
false_wf, 
not-ge-2, 
less-iff-le, 
condition-implies-le, 
minus-one-mul, 
zero-add, 
minus-add, 
minus-minus, 
add-associates, 
add-swap, 
add-commutes, 
add_functionality_wrt_le, 
add-zero, 
le-add-cancel, 
decidable__equal_int, 
subtype_rel-int_seg, 
le_weakening, 
int_seg_properties, 
le_wf, 
nat_wf, 
zero-le-nat, 
lelt_wf, 
es-causl_wf, 
es-first_wf2, 
bool_cases, 
subtype_base_sq, 
bool_wf, 
bool_subtype_base, 
eqtt_to_assert, 
eqff_to_assert, 
assert_of_bnot, 
es-pred_wf, 
es-pred-locl, 
es-causl_weakening, 
true_wf, 
bag_wf, 
es-pred-loc-base, 
iff_weakening_equal, 
equal_wf, 
decidable__lt, 
not-equal-2, 
le-add-cancel-alt, 
not-le-2, 
sq_stable__le, 
add-mul-special, 
zero-mul, 
es-E_wf, 
event-ordering+_wf, 
eclass_wf, 
Id_wf
\mforall{}[Info,A,S:Type].  \mforall{}[init:Id  {}\mrightarrow{}  bag(S)].  \mforall{}[f:A  {}\mrightarrow{}  S  {}\mrightarrow{}  S].  \mforall{}[X:EClass(A)].  \mforall{}[es:EO+(Info)].  \mforall{}[e:E].
    uiff(\mdownarrow{}\mexists{}s:S.  s  \mdownarrow{}\mmember{}  init  loc(e);\mdownarrow{}\mexists{}v:S.  iterated\_classrel(es;S;A;f;init;X;e;v))
Date html generated:
2015_07_17-PM-00_23_25
Last ObjectModification:
2015_02_04-PM-05_36_04
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