Step |
Hyp |
Ref |
Expression |
1 |
|
ancom |
|
2 |
1
|
a1i |
|
3 |
|
simp11 |
|
4 |
|
simp12 |
|
5 |
|
simp13 |
|
6 |
|
simp23 |
|
7 |
|
simp31 |
|
8 |
|
cgrcom |
|
9 |
3 4 5 6 7 8
|
syl122anc |
|
10 |
|
simp21 |
|
11 |
|
simp32 |
|
12 |
|
cgrcom |
|
13 |
3 5 10 7 11 12
|
syl122anc |
|
14 |
9 13
|
anbi12d |
|
15 |
|
simp22 |
|
16 |
|
simp33 |
|
17 |
|
cgrcom |
|
18 |
3 4 15 6 16 17
|
syl122anc |
|
19 |
|
cgrcom |
|
20 |
3 5 15 7 16 19
|
syl122anc |
|
21 |
18 20
|
anbi12d |
|
22 |
2 14 21
|
3anbi123d |
|
23 |
|
brofs |
|
24 |
|
brofs |
|
25 |
3 6 7 11 16 4 5 10 15 24
|
syl333anc |
|
26 |
22 23 25
|
3bitr4d |
|