Step |
Hyp |
Ref |
Expression |
1 |
|
oduglb.d |
|
2 |
|
odujoin.m |
|
3 |
|
eqid |
|
4 |
1 3
|
odulub |
|
5 |
4
|
breqd |
|
6 |
5
|
oprabbidv |
|
7 |
|
eqid |
|
8 |
3 7
|
meetfval |
|
9 |
1
|
fvexi |
|
10 |
|
eqid |
|
11 |
|
eqid |
|
12 |
10 11
|
joinfval |
|
13 |
9 12
|
mp1i |
|
14 |
6 8 13
|
3eqtr4d |
|
15 |
|
fvprc |
|
16 |
|
fvprc |
|
17 |
1 16
|
syl5eq |
|
18 |
17
|
fveq2d |
|
19 |
|
join0 |
|
20 |
18 19
|
eqtrdi |
|
21 |
15 20
|
eqtr4d |
|
22 |
14 21
|
pm2.61i |
|
23 |
2 22
|
eqtri |
|