Step |
Hyp |
Ref |
Expression |
1 |
|
simp1 |
|
2 |
1
|
anim2i |
|
3 |
2
|
ancomd |
|
4 |
|
3simpc |
|
5 |
4
|
adantl |
|
6 |
|
usgr2wlkneq |
|
7 |
3 5 6
|
syl2anc |
|
8 |
|
simpl |
|
9 |
|
fvex |
|
10 |
|
fvex |
|
11 |
|
fvex |
|
12 |
9 10 11
|
3pm3.2i |
|
13 |
8 12
|
jctil |
|
14 |
|
funcnvs3 |
|
15 |
7 13 14
|
3syl |
|
16 |
|
eqid |
|
17 |
16
|
wlkpwrd |
|
18 |
|
wlklenvp1 |
|
19 |
|
oveq1 |
|
20 |
|
2p1e3 |
|
21 |
19 20
|
eqtrdi |
|
22 |
21
|
3ad2ant2 |
|
23 |
18 22
|
sylan9eq |
|
24 |
|
wrdlen3s3 |
|
25 |
17 23 24
|
syl2an2r |
|
26 |
25
|
cnveqd |
|
27 |
26
|
funeqd |
|
28 |
15 27
|
mpbird |
|