Nuprl Lemma : assert_of_bimplies
9,38
postcript
pdf
p
,
q
:
. (
(
p
q
))
((
p
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(
q
))
latex
ProofTree
Definitions
,
P
Q
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P
Q
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True
,
t
T
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tt
,
ff
,
if
b
then
t
else
f
fi
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b
,
p
q
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P
Q
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p
q
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b
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P
Q
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x
:
A
.
B
(
x
)
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False
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Unit
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Lemmas
bool
wf
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false
wf
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true
wf
origin