Step of Proof: dcdr-to-bool_wf
11,40
postcript
pdf
Inference at
*
I
of proof for Lemma
dcdr-to-bool
wf
:
P
:
,
d
:Dec(
P
). [
d
]
latex
by (RepUR ``dcdr-to-bool bool decidable`` ( 0)
)
CollapseTHEN (Auto
)
latex
C
.
Definitions
Dec(
P
)
,
,
[
d
]
,
case
b
of inl(
x
) =>
s
(
x
) | inr(
y
) =>
t
(
y
)
,
inl
x
,
inr
x
,
,
Unit
,
P
Q
,
left
+
right
,
A
,
x
:
A
.
B
(
x
)
,
t
T
,
,
Type
Lemmas
it
wf
,
unit
wf
,
not
wf
origin