Step |
Hyp |
Ref |
Expression |
1 |
|
xpccat.t |
|
2 |
|
xpccat.c |
|
3 |
|
xpccat.d |
|
4 |
|
xpccat.x |
|
5 |
|
xpccat.y |
|
6 |
|
xpccat.i |
|
7 |
|
xpccat.j |
|
8 |
|
xpcid.1 |
|
9 |
|
xpcid.r |
|
10 |
|
xpcid.s |
|
11 |
|
df-ov |
|
12 |
1 2 3 4 5 6 7
|
xpccatid |
|
13 |
12
|
simprd |
|
14 |
8 13
|
syl5eq |
|
15 |
|
simprl |
|
16 |
15
|
fveq2d |
|
17 |
|
simprr |
|
18 |
17
|
fveq2d |
|
19 |
16 18
|
opeq12d |
|
20 |
|
opex |
|
21 |
20
|
a1i |
|
22 |
14 19 9 10 21
|
ovmpod |
|
23 |
11 22
|
syl5eqr |
|