Step |
Hyp |
Ref |
Expression |
1 |
|
eqid |
|
2 |
|
eqid |
|
3 |
1 2
|
umgrf |
|
4 |
|
isacycgr |
|
5 |
4
|
biimpa |
|
6 |
2
|
umgr2cycl |
|
7 |
|
2ne0 |
|
8 |
|
neeq1 |
|
9 |
7 8
|
mpbiri |
|
10 |
|
hasheq0 |
|
11 |
10
|
elv |
|
12 |
11
|
necon3bii |
|
13 |
9 12
|
sylib |
|
14 |
13
|
anim2i |
|
15 |
14
|
2eximi |
|
16 |
6 15
|
syl |
|
17 |
16
|
ex |
|
18 |
17
|
con3d |
|
19 |
18
|
adantr |
|
20 |
5 19
|
mpd |
|
21 |
|
dff15 |
|
22 |
21
|
biimpri |
|
23 |
3 20 22
|
syl2an2r |
|
24 |
1 2
|
isusgrs |
|
25 |
24
|
biimprd |
|
26 |
25
|
adantr |
|
27 |
23 26
|
mpd |
|