Step |
Hyp |
Ref |
Expression |
1 |
|
ispth |
|
2 |
|
simplll |
|
3 |
|
trliswlk |
|
4 |
|
wlkcl |
|
5 |
3 4
|
syl |
|
6 |
5
|
ad3antrrr |
|
7 |
|
eqid |
|
8 |
7
|
wlkp |
|
9 |
3 8
|
syl |
|
10 |
9
|
ad3antrrr |
|
11 |
|
simpllr |
|
12 |
|
simpr |
|
13 |
10 11 12
|
3jca |
|
14 |
|
simplr |
|
15 |
|
injresinj |
|
16 |
6 13 14 15
|
syl3c |
|
17 |
2 16
|
jca |
|
18 |
17
|
ex3 |
|
19 |
1 18
|
sylbi |
|
20 |
19
|
imp |
|
21 |
|
isspth |
|
22 |
20 21
|
sylibr |
|