Step of Proof: neg_mul_arg_bounds
12,41
postcript
pdf
Inference at
*
I
of proof for Lemma
neg
mul
arg
bounds
:
a
,
b
:
. ((
a
*
b
) < 0)
(((
a
< 0) & (
b
> 0))
((
a
> 0) & (
b
< 0)))
latex
by ((((RepD)
CollapseTHENM (InstLemma `pos_mul_arg_bounds` [-
a
;
b
]))
)
CollapseTHENA (
C
(Auto_aux (first_nat 1:n) ((first_nat 1:n),(first_nat 3:n)) (first_tok :t) inil_term)))
latex
C
1
:
C1:
1.
a
:
C1:
2.
b
:
C1:
3. (((-
a
) *
b
) > 0)
((((-
a
) > 0) & (
b
> 0))
(((-
a
) < 0) & (
b
< 0)))
C1:
((
a
*
b
) < 0)
(((
a
< 0) & (
b
> 0))
((
a
> 0) & (
b
< 0)))
C
.
Definitions
t
T
,
x
:
A
.
B
(
x
)
Lemmas
pos
mul
arg
bounds
origin