Step |
Hyp |
Ref |
Expression |
1 |
|
s7rn.a |
|
2 |
|
s7rn.b |
|
3 |
|
s7rn.c |
|
4 |
|
s7rn.d |
|
5 |
|
s7rn.e |
|
6 |
|
s7rn.f |
|
7 |
|
s7rn.g |
|
8 |
|
s4s3 |
|
9 |
8
|
a1i |
|
10 |
9
|
rneqd |
|
11 |
|
s4cli |
|
12 |
|
s3cli |
|
13 |
11 12
|
pm3.2i |
|
14 |
|
ccatrn |
|
15 |
13 14
|
mp1i |
|
16 |
|
df-s4 |
|
17 |
16
|
a1i |
|
18 |
17
|
rneqd |
|
19 |
|
s3cli |
|
20 |
|
s1cli |
|
21 |
19 20
|
pm3.2i |
|
22 |
|
ccatrn |
|
23 |
21 22
|
mp1i |
|
24 |
1 2 3
|
s3rn |
|
25 |
|
s1rn |
|
26 |
4 25
|
syl |
|
27 |
24 26
|
uneq12d |
|
28 |
18 23 27
|
3eqtrd |
|
29 |
5 6 7
|
s3rn |
|
30 |
28 29
|
uneq12d |
|
31 |
10 15 30
|
3eqtrd |
|