Step of Proof: branch-ifthenelse
11,40
postcript
pdf
Inference at
*
I
of proof for Lemma
branch-ifthenelse
:
b
:
,
P
,
Q
:Top. if
x
:
b
then
P
else
Q
fi ~ if
b
then
P
else
Q
fi
latex
by ((UnivCD)
CollapseTHENA (Auto
))
latex
Co
1
:
Co1:
1.
b
:
Co1:
2.
P
: Top
Co1:
3.
Q
: Top
Co1:
if
x
:
b
then
P
else
Q
fi ~ if
b
then
P
else
Q
fi
Co
.
Definitions
x
:
A
.
B
(
x
)
,
Top
,
t
T
,
Lemmas
top
wf
,
bool
wf
origin