Step of Proof: sq_stable__and
9,38
postcript
pdf
Inference at
*
1
I
of proof for Lemma
sq
stable
and
:
1.
P
:
2.
Q
:
3. (
P
)
P
4. (
Q
)
Q
5.
(
P
Q
)
P
latex
by HypBackchain
latex
1
:
1:
P
.
Definitions
P
Q
origin
P) 
P
Q) Q
(P 
Q)
P
by HypBackchain
1:
1: P
.
P) P
Q) Q
(P Q)
P
by HypBackchain
1:
1: P
. Q