Step |
Hyp |
Ref |
Expression |
1 |
|
cardprclem.1 |
|
2 |
1
|
eleq2i |
|
3 |
|
abid |
|
4 |
|
iscard |
|
5 |
2 3 4
|
3bitri |
|
6 |
5
|
simplbi |
|
7 |
6
|
ssriv |
|
8 |
|
ssonuni |
|
9 |
7 8
|
mpi |
|
10 |
|
domrefg |
|
11 |
9 10
|
syl |
|
12 |
|
elharval |
|
13 |
9 11 12
|
sylanbrc |
|
14 |
7
|
sseli |
|
15 |
|
domrefg |
|
16 |
15
|
ancli |
|
17 |
|
elharval |
|
18 |
16 17
|
sylibr |
|
19 |
14 18
|
syl |
|
20 |
|
harcard |
|
21 |
|
fvex |
|
22 |
|
fveq2 |
|
23 |
|
id |
|
24 |
22 23
|
eqeq12d |
|
25 |
21 24 1
|
elab2 |
|
26 |
20 25
|
mpbir |
|
27 |
|
eleq2 |
|
28 |
|
eleq1 |
|
29 |
27 28
|
anbi12d |
|
30 |
21 29
|
spcev |
|
31 |
19 26 30
|
sylancl |
|
32 |
|
eluni |
|
33 |
31 32
|
sylibr |
|
34 |
33
|
ssriv |
|
35 |
|
harcard |
|
36 |
|
fvex |
|
37 |
|
fveq2 |
|
38 |
|
id |
|
39 |
37 38
|
eqeq12d |
|
40 |
36 39 1
|
elab2 |
|
41 |
35 40
|
mpbir |
|
42 |
34 41
|
sselii |
|
43 |
13 42
|
jctir |
|
44 |
|
eloni |
|
45 |
|
ordn2lp |
|
46 |
9 44 45
|
3syl |
|
47 |
43 46
|
pm2.65i |
|