Step |
Hyp |
Ref |
Expression |
1 |
|
xpord2.1 |
|
2 |
|
opex |
|
3 |
|
opex |
|
4 |
|
eleq1 |
|
5 |
|
opelxp |
|
6 |
4 5
|
bitrdi |
|
7 |
|
vex |
|
8 |
|
vex |
|
9 |
7 8
|
op1std |
|
10 |
9
|
breq1d |
|
11 |
9
|
eqeq1d |
|
12 |
10 11
|
orbi12d |
|
13 |
7 8
|
op2ndd |
|
14 |
13
|
breq1d |
|
15 |
13
|
eqeq1d |
|
16 |
14 15
|
orbi12d |
|
17 |
|
neeq1 |
|
18 |
12 16 17
|
3anbi123d |
|
19 |
6 18
|
3anbi13d |
|
20 |
|
eleq1 |
|
21 |
|
opelxp |
|
22 |
20 21
|
bitrdi |
|
23 |
|
vex |
|
24 |
|
vex |
|
25 |
23 24
|
op1std |
|
26 |
25
|
breq2d |
|
27 |
25
|
eqeq2d |
|
28 |
26 27
|
orbi12d |
|
29 |
23 24
|
op2ndd |
|
30 |
29
|
breq2d |
|
31 |
29
|
eqeq2d |
|
32 |
30 31
|
orbi12d |
|
33 |
|
neeq2 |
|
34 |
7 8
|
opthne |
|
35 |
33 34
|
bitrdi |
|
36 |
28 32 35
|
3anbi123d |
|
37 |
22 36
|
3anbi23d |
|
38 |
2 3 19 37 1
|
brab |
|