(6steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
At:
mul
preserves
lt
a,b:
, n:
. a < b
n
a < n
b
By:
Auto
Generated subgoal:
1
1.
a:
2.
b:
3.
n:
4.
a < b
n
a < n
b
About:
(6steps)
PrintForm
Definitions
Lemmas
int
2
Sections
StandardLIB
Doc
n
a < nb 
a,b:, n:. a < b 
na < nb na < nb
