Step |
Hyp |
Ref |
Expression |
1 |
|
isarchi.b |
|
2 |
|
isarchi.0 |
|
3 |
|
isarchi.i |
|
4 |
|
fveqeq2 |
|
5 |
|
df-archi |
|
6 |
4 5
|
elab2g |
|
7 |
1
|
inftmrel |
|
8 |
|
ss0b |
|
9 |
|
ssrel2 |
|
10 |
8 9
|
bitr3id |
|
11 |
|
noel |
|
12 |
11
|
nbn |
|
13 |
3
|
breqi |
|
14 |
|
df-br |
|
15 |
13 14
|
bitri |
|
16 |
12 15
|
xchnxbir |
|
17 |
11
|
pm2.21i |
|
18 |
|
dfbi2 |
|
19 |
17 18
|
mpbiran2 |
|
20 |
16 19
|
bitri |
|
21 |
20
|
2ralbii |
|
22 |
10 21
|
bitr4di |
|
23 |
7 22
|
syl |
|
24 |
6 23
|
bitrd |
|