Step |
Hyp |
Ref |
Expression |
1 |
|
harcl |
|
2 |
|
sdomdom |
|
3 |
|
ondomen |
|
4 |
1 2 3
|
sylancr |
|
5 |
|
onenon |
|
6 |
1 5
|
ax-mp |
|
7 |
|
cardsdom2 |
|
8 |
4 6 7
|
sylancl |
|
9 |
8
|
ibir |
|
10 |
|
harcard |
|
11 |
9 10
|
eleqtrdi |
|
12 |
|
elharval |
|
13 |
12
|
simprbi |
|
14 |
11 13
|
syl |
|
15 |
|
cardid2 |
|
16 |
|
domen1 |
|
17 |
4 15 16
|
3syl |
|
18 |
14 17
|
mpbid |
|
19 |
|
domnsym |
|
20 |
18 19
|
syl |
|
21 |
20
|
con2i |
|
22 |
|
sdomen2 |
|
23 |
22
|
notbid |
|
24 |
21 23
|
syl5ib |
|
25 |
|
imnan |
|
26 |
24 25
|
sylib |
|
27 |
26
|
alrimiv |
|
28 |
27
|
olcd |
|
29 |
|
relen |
|
30 |
29
|
brrelex2i |
|
31 |
|
pwexb |
|
32 |
30 31
|
sylibr |
|
33 |
|
elgch |
|
34 |
32 33
|
syl |
|
35 |
28 34
|
mpbird |
|