Step |
Hyp |
Ref |
Expression |
1 |
|
nfriotadw.1 |
|
2 |
|
nfriotadw.2 |
|
3 |
|
nfriotadw.3 |
|
4 |
|
df-riota |
|
5 |
|
nfnaew |
|
6 |
1 5
|
nfan |
|
7 |
|
nfcvd |
|
8 |
7
|
adantl |
|
9 |
3
|
adantr |
|
10 |
8 9
|
nfeld |
|
11 |
2
|
adantr |
|
12 |
10 11
|
nfand |
|
13 |
6 12
|
nfiotadw |
|
14 |
13
|
ex |
|
15 |
|
nfiota1 |
|
16 |
|
biidd |
|
17 |
16
|
drnf1v |
|
18 |
17
|
albidv |
|
19 |
|
df-nfc |
|
20 |
|
df-nfc |
|
21 |
18 19 20
|
3bitr4g |
|
22 |
15 21
|
mpbiri |
|
23 |
14 22
|
pm2.61d2 |
|
24 |
4 23
|
nfcxfrd |
|