Nuprl Lemma : duplicate-and
0,22
postcript
pdf
p
,
q
:Prop.
p
&
p
&
q
p
&
q
latex
Definitions
Type
,
Prop
,
t
T
,
x
:
A
B
(
x
)
,
P
&
Q
,
P
Q
,
P
Q
,
P
Q
,
x
:
A
.
B
(
x
)
origin
p, q:Prop. p & p & q 
p & q p, q:Prop. p & p & q p & q 
T
B(x)
Q Q Qx:A. B(x)