Nuprl Lemma : mul_com
13,42
postcript
pdf
a
,
b
:
. (
a
*
b
) = (
b
*
a
)
latex
Up
int
2
,
int
2
Definitions
t
T
,
x
:
A
.
B
(
x
)
origin
a, b:
. (a * b) = (b * a) a, b:. (a * b) = (b * a) 
Tx:A. B(x)