Step |
Hyp |
Ref |
Expression |
1 |
|
lfuhgr3.1 |
|
2 |
|
lfuhgr3.2 |
|
3 |
1 2
|
lfuhgr2 |
|
4 |
|
df-ne |
|
5 |
4
|
ralbii |
|
6 |
|
ralnex |
|
7 |
|
df-rex |
|
8 |
7
|
notbii |
|
9 |
5 6 8
|
3bitri |
|
10 |
|
hashen1 |
|
11 |
10
|
elv |
|
12 |
|
en1 |
|
13 |
11 12
|
bitri |
|
14 |
13
|
anbi2i |
|
15 |
14
|
exbii |
|
16 |
15
|
notbii |
|
17 |
|
19.3v |
|
18 |
|
19.29 |
|
19 |
17 18
|
sylanbr |
|
20 |
|
eleq1 |
|
21 |
20
|
biimpac |
|
22 |
21
|
eximi |
|
23 |
19 22
|
syl |
|
24 |
23
|
exlimiv |
|
25 |
|
dfclel |
|
26 |
|
pm3.22 |
|
27 |
26
|
eximi |
|
28 |
25 27
|
sylbi |
|
29 |
28
|
eximi |
|
30 |
|
excomim |
|
31 |
|
19.40 |
|
32 |
|
ax5e |
|
33 |
32
|
anim1i |
|
34 |
31 33
|
syl |
|
35 |
34
|
eximi |
|
36 |
29 30 35
|
3syl |
|
37 |
24 36
|
impbii |
|
38 |
37
|
notbii |
|
39 |
9 16 38
|
3bitri |
|
40 |
3 39
|
bitrdi |
|