Nuprl Lemma : decidable__atom_equal_2
0,22
postcript
pdf
a
,
b
:Atom2. Dec(
a
=
b
)
latex
Definitions
x
:
A
.
B
(
x
)
,
s
=
t
,
Type
,
Atom$n
,
t
T
,
Dec(
P
)
,
if
a
=1
b
then
x
else
y
,
inl(
x
)
,
*
,
inr(
x
)
,
x
.
A
(
x
)
,
Prop
,
P
Q
,
A
,
False
,
P
Q
,
x
:
A
B
(
x
)
,
Void
Lemmas
not
wf
origin
a, b:Atom2. Dec(a = b) a, b:Atom2. Dec(a = b) x:A. B(x)
T
x.A(x)
Q
A
Q
B(x)