Nuprl Lemma : ite_rw_true
12,41
postcript
pdf
T
:Type,
b
:
,
x
,
y
:
T
. (
b
)
(if
b
then
x
else
y
fi =
x
)
latex
ProofTree
Definitions
,
t
T
,
False
,
P
Q
,
A
,
x
:
A
.
B
(
x
)
Lemmas
not
wf
,
bnot
wf
,
assert
wf
,
bool
wf
origin
T:Type, b:
, x, y:T. (
b) 
(if b then x else y fi = x)
T:Type, b:, x, y:T. (b) (if b then x else y fi = x)
T Q
Ax:A. B(x)