Step |
Hyp |
Ref |
Expression |
1 |
|
inf3lem.1 |
|
2 |
|
inf3lem.2 |
|
3 |
|
inf3lem.3 |
|
4 |
|
inf3lem.4 |
|
5 |
|
ineq1 |
|
6 |
5
|
sseq1d |
|
7 |
|
sseq2 |
|
8 |
7
|
rabbidv |
|
9 |
|
sseq2 |
|
10 |
9
|
rabbidv |
|
11 |
|
ineq1 |
|
12 |
11
|
sseq1d |
|
13 |
12
|
cbvrabv |
|
14 |
10 13
|
eqtrdi |
|
15 |
14
|
cbvmptv |
|
16 |
1 15
|
eqtri |
|
17 |
|
vex |
|
18 |
17
|
rabex |
|
19 |
8 16 18
|
fvmpt |
|
20 |
4 19
|
ax-mp |
|
21 |
6 20
|
elrab2 |
|