Step of Proof: pos_mul_arg_bounds
12,41
postcript
pdf
Inference at
*
1
3
I
of proof for Lemma
pos
mul
arg
bounds
:
1.
a
:
2.
b
:
3. (
a
*
b
) > 0
4.
a
> 0
((
a
> 0) & (
b
> 0))
((
a
< 0) & (
b
< 0))
latex
by ((Sel 1 (D 0))
CollapseTHEN ((Auto_aux (first_nat 1:n) ((first_nat 1:n),(first_nat 3:n
C
)) (first_tok :t) inil_term)))
latex
C
1
:
C1:
b
> 0
C
.
Definitions
,
t
T
,
P
&
Q
,
P
Q
origin