(9steps total)
PrintForm
Definitions
list
1
Sections
StandardLIB
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
firstn
wf
A
:Type,
as
:
A
List,
n
:
. firstn(
n
;
as
)
A
List
By:
CDToVarThen `
as
' ListInd
Generated subgoals:
1
1.
A
: Type
2.
A
List
n
:
. firstn(
n
;nil)
A
List
2
steps
2
1.
A
: Type
2.
A
List
3.
u
:
A
4.
v
:
A
List
5.
n
:
. firstn(
n
;
v
)
A
List
n
:
. firstn(
n
;
u
.
v
)
A
List
6
steps
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(9steps total)
PrintForm
Definitions
list
1
Sections
StandardLIB
Doc