Step |
Hyp |
Ref |
Expression |
1 |
|
erclwwlk.r |
|
2 |
1
|
erclwwlkeqlen |
|
3 |
1
|
erclwwlkeq |
|
4 |
|
simpl2 |
|
5 |
|
simpl1 |
|
6 |
|
eqid |
|
7 |
6
|
clwwlkbp |
|
8 |
7
|
simp2d |
|
9 |
8
|
ad2antlr |
|
10 |
|
simpr |
|
11 |
9 10
|
cshwcshid |
|
12 |
11
|
expd |
|
13 |
12
|
rexlimdv |
|
14 |
13
|
ex |
|
15 |
14
|
com23 |
|
16 |
15
|
3impia |
|
17 |
16
|
imp |
|
18 |
|
oveq2 |
|
19 |
18
|
eqeq2d |
|
20 |
19
|
cbvrexvw |
|
21 |
17 20
|
sylibr |
|
22 |
4 5 21
|
3jca |
|
23 |
1
|
erclwwlkeq |
|
24 |
23
|
ancoms |
|
25 |
22 24
|
syl5ibr |
|
26 |
25
|
expd |
|
27 |
3 26
|
sylbid |
|
28 |
2 27
|
mpdd |
|
29 |
28
|
el2v |
|