Step |
Hyp |
Ref |
Expression |
1 |
|
wlkcpr |
|
2 |
|
eqid |
|
3 |
2
|
wlkf |
|
4 |
|
eqid |
|
5 |
4
|
wlkp |
|
6 |
3 5
|
jca |
|
7 |
|
feq3 |
|
8 |
|
f00 |
|
9 |
7 8
|
syl6bb |
|
10 |
|
0z |
|
11 |
|
nn0z |
|
12 |
|
fzn |
|
13 |
10 11 12
|
sylancr |
|
14 |
|
nn0nlt0 |
|
15 |
14
|
pm2.21d |
|
16 |
13 15
|
sylbird |
|
17 |
16
|
com12 |
|
18 |
17
|
adantl |
|
19 |
|
lencl |
|
20 |
18 19
|
impel |
|
21 |
|
simpll |
|
22 |
20 21
|
jca |
|
23 |
22
|
ex |
|
24 |
9 23
|
syl6bi |
|
25 |
24
|
impcomd |
|
26 |
6 25
|
syl5 |
|
27 |
1 26
|
syl5bi |
|
28 |
27
|
imp |
|