(3steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
At:
add
cancel
in
le
1
1
1.
a:
2.
b:
3.
n:
4.
a+n
b+n
a+n+-n
b+n+-n
By:
BackThru
Thm*
i1,i2,j1,j2:
. i1
j1
i2
j2
i1+i2
j1+j2
Generated subgoals:
None
About:
(3steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
b+n
a+n+-nb+n+-n
i1,i2,j1,j2:. i1j1 
i2j2 i1+i2j1+j2
