Step |
Hyp |
Ref |
Expression |
1 |
|
3wlkd.p |
|
2 |
|
3wlkd.f |
|
3 |
|
3wlkd.s |
|
4 |
|
3wlkd.n |
|
5 |
|
3wlkd.e |
|
6 |
1 2 3 4 5
|
3wlkdlem7 |
|
7 |
|
s3fv0 |
|
8 |
|
s3fv1 |
|
9 |
|
s3fv2 |
|
10 |
7 8 9
|
3anim123i |
|
11 |
6 10
|
syl |
|
12 |
2
|
fveq1i |
|
13 |
12
|
eqeq1i |
|
14 |
2
|
fveq1i |
|
15 |
14
|
eqeq1i |
|
16 |
2
|
fveq1i |
|
17 |
16
|
eqeq1i |
|
18 |
13 15 17
|
3anbi123i |
|
19 |
11 18
|
sylibr |
|