Step |
Hyp |
Ref |
Expression |
1 |
|
wlkonl1iedg.i |
|
2 |
|
eqid |
|
3 |
2
|
wlkonprop |
|
4 |
|
fveq2 |
|
5 |
|
fv0p1e1 |
|
6 |
4 5
|
preq12d |
|
7 |
6
|
sseq1d |
|
8 |
7
|
rexbidv |
|
9 |
1
|
wlkvtxiedg |
|
10 |
9
|
adantr |
|
11 |
10
|
adantr |
|
12 |
|
wlkcl |
|
13 |
|
elnnne0 |
|
14 |
13
|
simplbi2 |
|
15 |
|
lbfzo0 |
|
16 |
14 15
|
syl6ibr |
|
17 |
12 16
|
syl |
|
18 |
17
|
adantr |
|
19 |
18
|
imp |
|
20 |
8 11 19
|
rspcdva |
|
21 |
|
fvex |
|
22 |
|
fvex |
|
23 |
21 22
|
prss |
|
24 |
|
eleq1 |
|
25 |
|
ax-1 |
|
26 |
24 25
|
syl6bi |
|
27 |
26
|
adantl |
|
28 |
27
|
impd |
|
29 |
23 28
|
syl5bir |
|
30 |
29
|
reximdv |
|
31 |
30
|
adantr |
|
32 |
20 31
|
mpd |
|
33 |
32
|
ex |
|
34 |
33
|
3adant3 |
|
35 |
34
|
3ad2ant3 |
|
36 |
3 35
|
syl |
|
37 |
36
|
imp |
|