Nuprl Lemma : id-sdata-one-one
∀[a,b:Id].  uiff(data(a) = data(b) ∈ SecurityData;a = b ∈ Id)
Proof
Definitions occuring in Statement : 
id-sdata: data(x)
, 
sdata: SecurityData
, 
Id: Id
, 
uiff: uiff(P;Q)
, 
uall: ∀[x:A]. B[x]
, 
equal: s = t ∈ T
Lemmas : 
equal_wf, 
sdata_wf, 
id-sdata_wf, 
and_wf, 
Id_wf, 
tree_leaf?_wf, 
bool_wf, 
eqtt_to_assert, 
tree_leaf-value_wf, 
eqff_to_assert, 
bool_cases_sqequal, 
subtype_base_sq, 
bool_subtype_base, 
assert-bnot, 
tree_wf, 
assert_wf, 
outl_wf, 
isl_wf
Latex:
\mforall{}[a,b:Id].    uiff(data(a)  =  data(b);a  =  b)
Date html generated:
2015_07_23-PM-00_00_49
Last ObjectModification:
2015_01_29-AM-07_43_37
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