Step |
Hyp |
Ref |
Expression |
1 |
|
epweon |
|
2 |
|
weso |
|
3 |
1 2
|
ax-mp |
|
4 |
|
soss |
|
5 |
3 4
|
mpi |
|
6 |
|
fimax2g |
|
7 |
5 6
|
syl3an1 |
|
8 |
|
ssel2 |
|
9 |
8
|
adantlr |
|
10 |
|
ssel2 |
|
11 |
10
|
adantr |
|
12 |
|
epel |
|
13 |
12
|
notbii |
|
14 |
|
ontri1 |
|
15 |
13 14
|
bitr4id |
|
16 |
9 11 15
|
syl2anc |
|
17 |
16
|
ralbidva |
|
18 |
|
unissb |
|
19 |
17 18
|
bitr4di |
|
20 |
19
|
rexbidva |
|
21 |
20
|
3ad2ant1 |
|
22 |
7 21
|
mpbid |
|
23 |
|
elssuni |
|
24 |
|
eqss |
|
25 |
|
eleq1 |
|
26 |
25
|
biimpcd |
|
27 |
24 26
|
syl5bir |
|
28 |
23 27
|
mpand |
|
29 |
28
|
rexlimiv |
|
30 |
22 29
|
syl |
|