Step |
Hyp |
Ref |
Expression |
1 |
|
znval.s |
|
2 |
|
znval.u |
|
3 |
|
znval.y |
|
4 |
|
znval.f |
|
5 |
|
znval.w |
|
6 |
|
znle.l |
|
7 |
|
eqid |
|
8 |
1 2 3 4 5 7
|
znval |
|
9 |
8
|
fveq2d |
|
10 |
2
|
ovexi |
|
11 |
|
fvex |
|
12 |
11
|
resex |
|
13 |
4 12
|
eqeltri |
|
14 |
|
xrex |
|
15 |
14 14
|
xpex |
|
16 |
|
lerelxr |
|
17 |
15 16
|
ssexi |
|
18 |
13 17
|
coex |
|
19 |
13
|
cnvex |
|
20 |
18 19
|
coex |
|
21 |
|
pleid |
|
22 |
21
|
setsid |
|
23 |
10 20 22
|
mp2an |
|
24 |
9 6 23
|
3eqtr4g |
|