(11steps total)
PrintForm
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
nsub
inj
lop
typing
1
1
2
1.
a
:
2.
b
:
3.
f
:
a
b
4. Inj(
a
;
b
;
f
)
Inj(
(
a
-1); {
x
:
b
|
x
=
f
(
a
-1) };
f
)
By:
Def THEN UnivCD
Generated subgoals:
1
5.
a1
:
(
a
-1)
6.
a2
:
(
a
-1)
7.
f
(
a1
) =
f
(
a2
)
{
x
:
b
|
x
=
f
(
a
-1) }
a1
=
a2
1
step
2
5.
a1
:
(
a
-1)
6.
(
a
-1)
f
(
a1
)
{
x
:
b
|
x
=
f
(
a
-1) }
2
steps
3
5.
(
a
-1)
6.
a2
:
(
a
-1)
f
(
a2
)
{
x
:
b
|
x
=
f
(
a
-1) }
1
step
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(11steps total)
PrintForm
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc