Step |
Hyp |
Ref |
Expression |
1 |
|
mzpclval |
|
2 |
1
|
eleq2d |
|
3 |
|
eleq2 |
|
4 |
3
|
ralbidv |
|
5 |
|
eleq2 |
|
6 |
5
|
ralbidv |
|
7 |
4 6
|
anbi12d |
|
8 |
|
eleq2 |
|
9 |
|
eleq2 |
|
10 |
8 9
|
anbi12d |
|
11 |
10
|
raleqbi1dv |
|
12 |
11
|
raleqbi1dv |
|
13 |
7 12
|
anbi12d |
|
14 |
13
|
elrab |
|
15 |
|
ovex |
|
16 |
15
|
elpw2 |
|
17 |
16
|
anbi1i |
|
18 |
14 17
|
bitri |
|
19 |
2 18
|
bitrdi |
|