Step |
Hyp |
Ref |
Expression |
1 |
|
sprsymrelf.p |
|
2 |
|
sprsymrelf.r |
|
3 |
|
sprsymrelf.f |
|
4 |
1 2 3
|
sprsymrelf |
|
5 |
4
|
a1i |
|
6 |
|
breq |
|
7 |
|
breq |
|
8 |
6 7
|
bibi12d |
|
9 |
8
|
2ralbidv |
|
10 |
9 2
|
elrab2 |
|
11 |
|
eqid |
|
12 |
11
|
sprsymrelfolem1 |
|
13 |
12 1
|
eleqtrri |
|
14 |
13
|
a1i |
|
15 |
|
rexeq |
|
16 |
15
|
opabbidv |
|
17 |
16
|
eqeq2d |
|
18 |
17
|
adantl |
|
19 |
|
velpw |
|
20 |
|
xpss |
|
21 |
|
sstr2 |
|
22 |
20 21
|
mpi |
|
23 |
|
df-rel |
|
24 |
22 23
|
sylibr |
|
25 |
24
|
adantl |
|
26 |
|
dfrel4v |
|
27 |
|
nfv |
|
28 |
|
nfra1 |
|
29 |
27 28
|
nfan |
|
30 |
|
nfv |
|
31 |
|
nfra2w |
|
32 |
30 31
|
nfan |
|
33 |
11
|
sprsymrelfolem2 |
|
34 |
33
|
3expa |
|
35 |
29 32 34
|
opabbid |
|
36 |
35
|
eqeq2d |
|
37 |
36
|
biimpd |
|
38 |
37
|
ex |
|
39 |
38
|
com23 |
|
40 |
26 39
|
syl5bi |
|
41 |
25 40
|
mpd |
|
42 |
41
|
expcom |
|
43 |
42
|
com23 |
|
44 |
19 43
|
sylbi |
|
45 |
44
|
imp31 |
|
46 |
14 18 45
|
rspcedvd |
|
47 |
46
|
ex |
|
48 |
10 47
|
sylbi |
|
49 |
48
|
impcom |
|
50 |
1 2 3
|
sprsymrelfv |
|
51 |
50
|
adantl |
|
52 |
51
|
eqeq2d |
|
53 |
52
|
rexbidva |
|
54 |
49 53
|
mpbird |
|
55 |
54
|
ralrimiva |
|
56 |
|
dffo3 |
|
57 |
5 55 56
|
sylanbrc |
|