Step |
Hyp |
Ref |
Expression |
1 |
|
lrrec.1 |
|
2 |
|
dfpred3g |
|
3 |
1
|
lrrecval |
|
4 |
3
|
ancoms |
|
5 |
4
|
rabbidva |
|
6 |
|
dfrab2 |
|
7 |
|
abid2 |
|
8 |
7
|
ineq1i |
|
9 |
6 8
|
eqtri |
|
10 |
5 9
|
eqtrdi |
|
11 |
|
leftssold |
|
12 |
|
bdayelon |
|
13 |
|
oldf |
|
14 |
13
|
ffvelrni |
|
15 |
14
|
elpwid |
|
16 |
12 15
|
ax-mp |
|
17 |
11 16
|
sstrdi |
|
18 |
|
rightssold |
|
19 |
18 16
|
sstrdi |
|
20 |
17 19
|
unssd |
|
21 |
|
df-ss |
|
22 |
20 21
|
sylib |
|
23 |
2 10 22
|
3eqtrd |
|