Step of Proof: or_functionality_wrt_iff
9,38
postcript
pdf
Inference at
*
I
of proof for Lemma
or
functionality
wrt
iff
:
P1
,
P2
,
Q1
,
Q2
:
. (
P1
P2
)
(
Q1
Q2
)
((
P1
Q1
)
(
P2
Q2
))
latex
by ((GenUnivCD)
CollapseTHENA ((Auto_aux (first_nat 1:n) ((first_nat 1:n),(first_nat 3:n
C
)) (first_tok :t) inil_term)))
latex
C
1
:
C1:
1.
P1
:
C1:
2.
P2
:
C1:
3.
Q1
:
C1:
4.
Q2
:
C1:
5.
P1
P2
C1:
6.
Q1
Q2
C1:
7.
P1
Q1
C1:
P2
Q2
C
2
:
C2:
1.
P1
:
C2:
2.
P2
:
C2:
3.
Q1
:
C2:
4.
Q2
:
C2:
5.
P1
P2
C2:
6.
Q1
Q2
C2:
7.
P2
Q2
C2:
P1
Q1
C
.
Definitions
t
T
,
P
Q
,
P
Q
,
P
Q
,
P
Q
,
P
Q
,
,
x
:
A
.
B
(
x
)
Lemmas
iff
wf
origin