(13steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
At:
mul
cancel
in
eq
1
2
2
2
1.
a:
2.
b:
3.
n:
4.
m:
. m
a = m
b
a = b
5.
n
a = n
b
6.
n > 0
7.
(-n)
(-a) = (-n)
(-b)
a = b
By:
InstHyp [-n] 4
Generated subgoal:
1
0 < -n
About:
(13steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
m:
. m
a = mb 
a = ba = nb
n > 0(-a) = (-n)(-b)
a = b 0 < -n
