Theorem
d2ne0
≪
|
index
|
src
|
≫
theorem d2ne0: $ 2 != 0 $;
Step
Hyp
Ref
Expression
1
peano1
suc 1 != 0
2
1
conv
d2
2 != 0
Axiom use
axs_peano
(
peano1
)