(5steps total)
PrintForm
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
inj
point
deletion
1
1
1.
A
: Type
2.
B
: Type
3.
f
:
A
B
4. Inj(
A
;
B
;
f
)
5.
a
:
A
f
{
x
:
A
|
x
=
a
}
{
y
:
B
|
y
=
f
(
a
) }
By:
FunExtensionality THEN Analyze-1 THEN Analyze
Generated subgoal:
1
6.
x
:
A
7.
x
=
a
f
(
x
) =
f
(
a
)
2
steps
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(5steps total)
PrintForm
Definitions
DiscreteMath
Sections
DiscrMathExt
Doc
B
f 
{x:A| 
x = a }
