Nuprl Lemma : RankEx4-ext
RankEx4() ≡ lbl:Atom × if lbl =a "Foo" then ℤ + RankEx4() else Void fi
Proof
Definitions occuring in Statement :
RankEx4: RankEx4(),
ifthenelse: if b then t else f fi ,
eq_atom: x =a y,
ext-eq: A ≡ B,
product: x:A × B[x],
union: left + right,
int: ℤ,
token: "$token",
atom: Atom,
void: Void
Lemmas :
RankEx4co-ext,
eq_atom_wf,
bool_wf,
eqtt_to_assert,
assert_of_eq_atom,
subtype_base_sq,
atom_subtype_base,
RankEx4_wf,
value-type-has-value,
int-value-type,
has-value_wf-partial,
nat_wf,
set-value-type,
le_wf,
RankEx4co_size_wf,
eqff_to_assert,
equal_wf,
bool_cases_sqequal,
bool_subtype_base,
assert-bnot,
neg_assert_of_eq_atom,
subtype_rel_sum,
RankEx4co_wf,
add-nat,
false_wf,
RankEx4_size_wf,
nat_properties
RankEx4() \mequiv{} lbl:Atom \mtimes{} if lbl =a "Foo" then \mBbbZ{} + RankEx4() else Void fi
Date html generated:
2015_07_17-AM-07_50_59
Last ObjectModification:
2015_01_29-PM-04_39_00
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