Step |
Hyp |
Ref |
Expression |
1 |
|
n0 |
|
2 |
|
ssltex1 |
|
3 |
2
|
3ad2ant2 |
|
4 |
|
ssltex2 |
|
5 |
4
|
3ad2ant3 |
|
6 |
|
ssltss1 |
|
7 |
6
|
3ad2ant2 |
|
8 |
|
ssltss2 |
|
9 |
8
|
3ad2ant3 |
|
10 |
7
|
3ad2ant1 |
|
11 |
|
simp2 |
|
12 |
10 11
|
sseldd |
|
13 |
|
ssltss2 |
|
14 |
13
|
3ad2ant2 |
|
15 |
14
|
3ad2ant1 |
|
16 |
|
simp11 |
|
17 |
15 16
|
sseldd |
|
18 |
9
|
3ad2ant1 |
|
19 |
|
simp3 |
|
20 |
18 19
|
sseldd |
|
21 |
|
simp12 |
|
22 |
21 11 16
|
ssltsepcd |
|
23 |
|
simp13 |
|
24 |
23 16 19
|
ssltsepcd |
|
25 |
12 17 20 22 24
|
slttrd |
|
26 |
3 5 7 9 25
|
ssltd |
|
27 |
26
|
3exp |
|
28 |
27
|
exlimiv |
|
29 |
1 28
|
sylbi |
|
30 |
29
|
3imp231 |
|