Nuprl Lemma : qsub-sub
11,40
postcript
pdf
a
,
b
:
. (
a
-
b
) = (
a
-
b
)
latex
Definitions
t
T
,
r
-
s
,
x
:
A
.
B
(
x
)
,
P
Q
,
P
&
Q
,
P
Q
,
P
Q
Lemmas
int-eq-in-rationals
,
qmul-mul
,
qadd-add
origin
a, b:
. (a - b) = (a - b) 
a, b:. (a - b) = (a - b) Tx:A. B(x)
Q
Q Q