Step |
Hyp |
Ref |
Expression |
1 |
|
rusgrnumwwlk.v |
|
2 |
|
rusgrnumwwlk.l |
|
3 |
|
simpr |
|
4 |
|
0nn0 |
|
5 |
1 2
|
rusgrnumwwlklem |
|
6 |
3 4 5
|
sylancl |
|
7 |
|
df-rab |
|
8 |
7
|
a1i |
|
9 |
|
wwlksn0s |
|
10 |
9
|
a1i |
|
11 |
10
|
eleq2d |
|
12 |
|
rabid |
|
13 |
11 12
|
syl6bb |
|
14 |
13
|
anbi1d |
|
15 |
14
|
abbidv |
|
16 |
|
wrdl1s1 |
|
17 |
|
df-3an |
|
18 |
16 17
|
bitr2di |
|
19 |
|
vex |
|
20 |
|
eleq1w |
|
21 |
|
fveqeq2 |
|
22 |
20 21
|
anbi12d |
|
23 |
|
fveq1 |
|
24 |
23
|
eqeq1d |
|
25 |
22 24
|
anbi12d |
|
26 |
19 25
|
elab |
|
27 |
|
velsn |
|
28 |
18 26 27
|
3bitr4g |
|
29 |
28 1
|
eleq2s |
|
30 |
29
|
eqrdv |
|
31 |
30
|
adantl |
|
32 |
8 15 31
|
3eqtrd |
|
33 |
32
|
fveq2d |
|
34 |
|
s1cl |
|
35 |
|
hashsng |
|
36 |
34 35
|
syl |
|
37 |
36
|
adantl |
|
38 |
6 33 37
|
3eqtrd |
|