Step |
Hyp |
Ref |
Expression |
1 |
|
psgnval.g |
|
2 |
|
psgnval.t |
|
3 |
|
psgnval.n |
|
4 |
|
eqid |
|
5 |
|
eqid |
|
6 |
1 4 5 3
|
psgnfn |
|
7 |
6
|
fndmi |
|
8 |
|
eqid |
|
9 |
2 1 4 8
|
symggen |
|
10 |
1
|
symggrp |
|
11 |
|
grpmnd |
|
12 |
10 11
|
syl |
|
13 |
2 1 4
|
symgtrf |
|
14 |
4 8
|
gsumwspan |
|
15 |
12 13 14
|
sylancl |
|
16 |
9 15
|
eqtr3d |
|
17 |
7 16
|
syl5eq |
|
18 |
17
|
eleq2d |
|
19 |
|
eqid |
|
20 |
|
ovex |
|
21 |
19 20
|
elrnmpti |
|
22 |
18 21
|
bitrdi |
|