Nuprl Lemma : once-classrel
[Info,A:Type]. [X:EClass(A)]. [es:EO+(Info)]. [e:E]. v:A. uiff(v 
once-class(X)(e);(no X prior to e) 
v X(e))
Proof not projected
Definitions occuring in Statement :
once-class: once-class(X),
no-prior-classrel: (no X prior to e),
classrel: v X(e),
eclass: EClass(A[eo; e]),
event-ordering+: EO+(Info),
es-E: E,
uiff: uiff(P;Q),
uall: [x:A]. B[x],
all: x:A. B[x],
and: P Q,
universe: Type
Definitions :
uall: [x:A]. B[x],
so_lambda: 
x y.t[x; y],
so_lambda: x.t[x],
true: True,
squash: 
T,
bag-member: x bs,
false: False,
implies: P 
Q,
member: t T,
uimplies: b supposing a,
not: 
A,
alle-lt: e<e'.P[e],
no-prior-classrel: (no X prior to e),
and: P Q,
once-class: once-class(X),
classrel: v X(e),
uiff: uiff(P;Q),
all: x:A. B[x],
so_apply: x[s1;s2],
rev_implies: P 
Q,
iff: P Q,
so_apply: x[s],
prop: 
,
subtype: S 
T,
guard: {T}
Lemmas :
until-classrel,
eclass_wf,
event-ordering+_wf,
es-E_wf,
event-ordering+_inc,
es-locl_wf,
es-loc_wf,
Id_wf,
not_wf,
all_wf,
alle-lt_wf,
and_wf,
once-class_wf,
classrel_wf
\mforall{}[Info,A:Type]. \mforall{}[X:EClass(A)]. \mforall{}[es:EO+(Info)]. \mforall{}[e:E].
\mforall{}v:A. uiff(v \mmember{} once-class(X)(e);(no X prior to e) \mwedge{} v \mmember{} X(e))
Date html generated:
2012_01_23-PM-12_26_32
Last ObjectModification:
2011_12_13-PM-02_24_06
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