Metamath Proof Explorer
Description: Syllogism combined with contraction. (Contributed by NM, 11-Mar-2012)
|
|
Ref |
Expression |
|
Hypotheses |
syl3anc.1 |
|
|
|
syl3anc.2 |
|
|
|
syl3anc.3 |
|
|
|
syl3Xanc.4 |
|
|
|
syl23anc.5 |
|
|
|
syl33anc.6 |
|
|
|
syl133anc.7 |
|
|
|
syl233anc.8 |
|
|
|
syl323anc.9 |
|
|
Assertion |
syl323anc |
|
Proof
Step |
Hyp |
Ref |
Expression |
1 |
|
syl3anc.1 |
|
2 |
|
syl3anc.2 |
|
3 |
|
syl3anc.3 |
|
4 |
|
syl3Xanc.4 |
|
5 |
|
syl23anc.5 |
|
6 |
|
syl33anc.6 |
|
7 |
|
syl133anc.7 |
|
8 |
|
syl233anc.8 |
|
9 |
|
syl323anc.9 |
|
10 |
4 5
|
jca |
|
11 |
1 2 3 10 6 7 8 9
|
syl313anc |
|