Step |
Hyp |
Ref |
Expression |
1 |
|
dfdfat2 |
|
2 |
|
eqidd |
|
3 |
|
df-dfat |
|
4 |
3
|
simplbi |
|
5 |
|
dfatbrafv2b |
|
6 |
4 5
|
sylan2 |
|
7 |
2 6
|
mpbid |
|
8 |
|
eqidd |
|
9 |
|
simpr |
|
10 |
|
dfatafv2ex |
|
11 |
10
|
adantl |
|
12 |
|
dfatbrafv2b |
|
13 |
9 11 12
|
syl2anc |
|
14 |
8 13
|
mpbid |
|
15 |
4
|
adantl |
|
16 |
|
breq2 |
|
17 |
16
|
adantl |
|
18 |
|
breq12 |
|
19 |
18
|
ancoms |
|
20 |
17 19
|
anbi12d |
|
21 |
20
|
spc2egv |
|
22 |
11 15 21
|
syl2anc |
|
23 |
7 14 22
|
mp2and |
|
24 |
|
dfdfat2 |
|
25 |
|
tz6.12c-afv2 |
|
26 |
25
|
adantl |
|
27 |
24 26
|
sylbi |
|
28 |
27
|
adantr |
|
29 |
|
breq1 |
|
30 |
29
|
adantl |
|
31 |
30
|
exbiri |
|
32 |
31
|
adantl |
|
33 |
28 32
|
sylbird |
|
34 |
33
|
impd |
|
35 |
34
|
exlimdv |
|
36 |
35
|
alrimiv |
|
37 |
|
euim |
|
38 |
23 36 37
|
syl2anc |
|
39 |
38
|
com12 |
|
40 |
39
|
adantl |
|
41 |
40
|
adantl |
|
42 |
1 41
|
sylan2b |
|
43 |
42
|
pm2.43i |
|
44 |
|
df-dfat |
|
45 |
44
|
simplbi |
|
46 |
|
vex |
|
47 |
46
|
a1i |
|
48 |
|
brcog |
|
49 |
45 47 48
|
syl2an |
|
50 |
49
|
eubidv |
|
51 |
43 50
|
mpbird |
|