Step |
Hyp |
Ref |
Expression |
1 |
|
eulerpathpr.v |
|
2 |
|
eqid |
|
3 |
|
simpl |
|
4 |
|
upgruhgr |
|
5 |
2
|
uhgrfun |
|
6 |
4 5
|
syl |
|
7 |
6
|
adantr |
|
8 |
|
simpr |
|
9 |
1 2 3 7 8
|
eupth2 |
|
10 |
9
|
3adant3 |
|
11 |
|
crctprop |
|
12 |
11
|
simprd |
|
13 |
12
|
3ad2ant3 |
|
14 |
13
|
iftrued |
|
15 |
14
|
eqeq2d |
|
16 |
|
rabeq0 |
|
17 |
|
notnotr |
|
18 |
17
|
ralimi |
|
19 |
16 18
|
sylbi |
|
20 |
15 19
|
syl6bi |
|
21 |
10 20
|
mpd |
|