Step |
Hyp |
Ref |
Expression |
1 |
|
onovuni.1 |
|
2 |
|
onovuni.2 |
|
3 |
|
oveq2 |
|
4 |
|
eqid |
|
5 |
|
ovex |
|
6 |
3 4 5
|
fvmpt |
|
7 |
6
|
elv |
|
8 |
|
oveq2 |
|
9 |
|
ovex |
|
10 |
8 4 9
|
fvmpt |
|
11 |
10
|
elv |
|
12 |
11
|
a1i |
|
13 |
12
|
iuneq2i |
|
14 |
1 7 13
|
3eqtr4g |
|
15 |
2 11 7
|
3sstr4g |
|
16 |
14 15
|
onfununi |
|
17 |
|
uniexg |
|
18 |
|
oveq2 |
|
19 |
|
ovex |
|
20 |
18 4 19
|
fvmpt |
|
21 |
17 20
|
syl |
|
22 |
21
|
3ad2ant1 |
|
23 |
11
|
a1i |
|
24 |
23
|
iuneq2i |
|
25 |
24
|
a1i |
|
26 |
16 22 25
|
3eqtr3d |
|