Step |
Hyp |
Ref |
Expression |
1 |
|
nfv |
|
2 |
|
nfvd |
|
3 |
|
nfcvf |
|
4 |
3
|
nfcrd |
|
5 |
|
nfvd |
|
6 |
4 5
|
nfand |
|
7 |
2 6
|
nfbid |
|
8 |
1 7
|
nfald |
|
9 |
|
nfvd |
|
10 |
|
elequ2 |
|
11 |
10
|
bibi1d |
|
12 |
11
|
biimpd |
|
13 |
12
|
alimdv |
|
14 |
13
|
a1i |
|
15 |
|
elequ2 |
|
16 |
15
|
anbi1d |
|
17 |
16
|
bibi2d |
|
18 |
17
|
biimpd |
|
19 |
18
|
alimdv |
|
20 |
19
|
sps |
|
21 |
|
ax-sep |
|
22 |
|
ax-nul |
|
23 |
|
id |
|
24 |
23
|
bianfd |
|
25 |
24
|
alimi |
|
26 |
22 25
|
eximii |
|
27 |
8 9 14 20 21 26
|
dvelimexcasei |
|