{ 
[a:Id]. [d1,d2:SecurityData]. uiff(<d1, d2> = data(a);False) }
{ Proof }
Definitions occuring in Statement :
sdata-pair: <d1, d2>,
id-sdata: data(x),
sdata: SecurityData,
Id: Id,
uiff: uiff(P;Q),
uall: [x:A]. B[x],
false: False,
equal: s = t
Definitions :
uall: [x:A]. B[x],
uiff: uiff(P;Q),
false: False,
member: t 
T,
and: P 
Q,
uimplies: b supposing a,
prop: 
,
implies: P 
Q,
iff: P 
Q
Lemmas :
iff_weakening_uiff,
false_wf,
id-sdata-not-pair,
sdata_wf,
sdata-pair_wf,
id-sdata_wf,
Id_wf
\mforall{}[a:Id]. \mforall{}[d1,d2:SecurityData]. uiff(<d1, d2> = data(a);False)
Date html generated:
2011_08_17-PM-07_09_39
Last ObjectModification:
2011_06_18-PM-12_53_23
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