Step |
Hyp |
Ref |
Expression |
1 |
|
ceqsex8v.1 |
|
2 |
|
ceqsex8v.2 |
|
3 |
|
ceqsex8v.3 |
|
4 |
|
ceqsex8v.4 |
|
5 |
|
ceqsex8v.5 |
|
6 |
|
ceqsex8v.6 |
|
7 |
|
ceqsex8v.7 |
|
8 |
|
ceqsex8v.8 |
|
9 |
|
ceqsex8v.9 |
|
10 |
|
ceqsex8v.10 |
|
11 |
|
ceqsex8v.11 |
|
12 |
|
ceqsex8v.12 |
|
13 |
|
ceqsex8v.13 |
|
14 |
|
ceqsex8v.14 |
|
15 |
|
ceqsex8v.15 |
|
16 |
|
ceqsex8v.16 |
|
17 |
|
19.42vv |
|
18 |
17
|
2exbii |
|
19 |
|
19.42vv |
|
20 |
18 19
|
bitri |
|
21 |
|
3anass |
|
22 |
|
df-3an |
|
23 |
22
|
anbi2i |
|
24 |
21 23
|
bitr4i |
|
25 |
24
|
2exbii |
|
26 |
25
|
2exbii |
|
27 |
|
df-3an |
|
28 |
20 26 27
|
3bitr4i |
|
29 |
28
|
2exbii |
|
30 |
29
|
2exbii |
|
31 |
9
|
3anbi3d |
|
32 |
31
|
4exbidv |
|
33 |
10
|
3anbi3d |
|
34 |
33
|
4exbidv |
|
35 |
11
|
3anbi3d |
|
36 |
35
|
4exbidv |
|
37 |
12
|
3anbi3d |
|
38 |
37
|
4exbidv |
|
39 |
1 2 3 4 32 34 36 38
|
ceqsex4v |
|
40 |
5 6 7 8 13 14 15 16
|
ceqsex4v |
|
41 |
39 40
|
bitri |
|
42 |
30 41
|
bitri |
|