Step |
Hyp |
Ref |
Expression |
1 |
|
wlkcpr |
|
2 |
|
wlkn0 |
|
3 |
1 2
|
sylbi |
|
4 |
3
|
adantl |
|
5 |
|
eqid |
|
6 |
|
eqid |
|
7 |
|
eqid |
|
8 |
|
eqid |
|
9 |
5 6 7 8
|
wlkelwrd |
|
10 |
|
ffz0iswrd |
|
11 |
10
|
adantl |
|
12 |
9 11
|
syl |
|
13 |
12
|
adantl |
|
14 |
|
eqid |
|
15 |
14
|
upgrwlkvtxedg |
|
16 |
|
wlklenvm1 |
|
17 |
16
|
adantl |
|
18 |
17
|
oveq2d |
|
19 |
18
|
raleqdv |
|
20 |
15 19
|
mpbid |
|
21 |
1 20
|
sylan2b |
|
22 |
4 13 21
|
3jca |
|
23 |
22
|
adantr |
|
24 |
|
simpl |
|
25 |
|
oveq2 |
|
26 |
25
|
adantl |
|
27 |
26
|
feq2d |
|
28 |
27
|
biimpd |
|
29 |
28
|
impancom |
|
30 |
29
|
adantld |
|
31 |
30
|
imp |
|
32 |
|
ffz0hash |
|
33 |
24 31 32
|
syl2an2 |
|
34 |
33
|
ex |
|
35 |
9 34
|
syl |
|
36 |
35
|
adantl |
|
37 |
36
|
imp |
|
38 |
24
|
adantl |
|
39 |
|
iswwlksn |
|
40 |
5 14
|
iswwlks |
|
41 |
40
|
a1i |
|
42 |
41
|
anbi1d |
|
43 |
39 42
|
bitrd |
|
44 |
38 43
|
syl |
|
45 |
23 37 44
|
mpbir2and |
|