(4steps total)
PrintForm
Lemmas
SimpleMulFacts
Sections
DiscrMathExt
Doc
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
At:
prod
zero
iff
factor
zero
1
2
1.
a
:
2.
b
:
3.
a
= 0
b
= 0
a
b
= 0
By:
BackThru:
Thm*
a
,
b
:
.
a
= 0
b
= 0
a
b
= 0
Generated subgoals:
None
About:
IF YOU CAN SEE THIS go to /sfa/Nuprl/Shared/Xindentation_hack_doc.html
(4steps total)
PrintForm
Lemmas
SimpleMulFacts
Sections
DiscrMathExt
Doc
b = 0
a
b = 0
b = 0
ab = 0
a,b:. a = 0 b = 0 
ab = 0
