(4steps total)
Remark
PrintForm
Definitions
Lemmas
DiscreteMath
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
mul
assoc
from
cross
assoc
1
1.
a
:
2.
b
:
3.
c
:
a
b
c
=
a
b
c
By:
BackThru:
Thm*
a
,
b
:
. (
a
~
b
)
a
=
b
...w
Generated subgoal:
1
(
a
b
c
) ~
(
a
b
c
)
2
steps
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(4steps total)
Remark
PrintForm
Definitions
Lemmas
DiscreteMath
Sections
DiscrMathExt
Doc
a
bc = abc
abc = abc
a,b:. (a ~ b) 
a = b ...w (abc) ~ (abc)
