Step |
Hyp |
Ref |
Expression |
1 |
|
psgnprfval.0 |
|
2 |
|
psgnprfval.g |
|
3 |
|
psgnprfval.b |
|
4 |
|
psgnprfval.t |
|
5 |
|
psgnprfval.n |
|
6 |
|
id |
|
7 |
|
elpri |
|
8 |
|
prfi |
|
9 |
|
eleq1 |
|
10 |
8 9
|
mpbiri |
|
11 |
|
prfi |
|
12 |
|
eleq1 |
|
13 |
11 12
|
mpbiri |
|
14 |
10 13
|
jaoi |
|
15 |
|
diffi |
|
16 |
14 15
|
syl |
|
17 |
|
dmfi |
|
18 |
7 16 17
|
3syl |
|
19 |
|
1ex |
|
20 |
|
2nn |
|
21 |
2 3 1
|
symg2bas |
|
22 |
19 20 21
|
mp2an |
|
23 |
18 22
|
eleq2s |
|
24 |
2 5 3
|
psgneldm |
|
25 |
6 23 24
|
sylanbrc |
|
26 |
2 4 5
|
psgnval |
|
27 |
25 26
|
syl |
|
28 |
6 27
|
syl |
|