Step |
Hyp |
Ref |
Expression |
1 |
|
cgsex4g.1 |
|
2 |
|
cgsex4g.2 |
|
3 |
2
|
biimpa |
|
4 |
3
|
exlimivv |
|
5 |
4
|
exlimivv |
|
6 |
|
elisset |
|
7 |
|
elisset |
|
8 |
6 7
|
anim12i |
|
9 |
|
elisset |
|
10 |
|
elisset |
|
11 |
9 10
|
anim12i |
|
12 |
8 11
|
anim12i |
|
13 |
|
19.42vv |
|
14 |
13
|
2exbii |
|
15 |
|
19.41vv |
|
16 |
|
exdistrv |
|
17 |
|
exdistrv |
|
18 |
16 17
|
anbi12i |
|
19 |
14 15 18
|
3bitri |
|
20 |
12 19
|
sylibr |
|
21 |
1
|
2eximi |
|
22 |
21
|
2eximi |
|
23 |
20 22
|
syl |
|
24 |
2
|
biimprcd |
|
25 |
24
|
ancld |
|
26 |
25
|
2eximdv |
|
27 |
26
|
2eximdv |
|
28 |
23 27
|
syl5com |
|
29 |
5 28
|
impbid2 |
|