Step |
Hyp |
Ref |
Expression |
1 |
|
eqid |
|
2 |
|
dfatafv2ex |
|
3 |
2
|
adantr |
|
4 |
|
eqeq2 |
|
5 |
|
breq2 |
|
6 |
4 5
|
bibi12d |
|
7 |
6
|
adantl |
|
8 |
|
dfdfat2 |
|
9 |
|
tz6.12c-afv2 |
|
10 |
8 9
|
simplbiim |
|
11 |
10
|
adantr |
|
12 |
3 7 11
|
vtocld |
|
13 |
1 12
|
mpbii |
|
14 |
|
breq2 |
|
15 |
13 14
|
syl5ibcom |
|
16 |
|
df-dfat |
|
17 |
|
simpll |
|
18 |
|
simpr |
|
19 |
|
simpr |
|
20 |
19
|
adantr |
|
21 |
17 18 20
|
jca31 |
|
22 |
16 21
|
sylanb |
|
23 |
|
funressnbrafv2 |
|
24 |
22 23
|
syl |
|
25 |
15 24
|
impbid |
|