Step |
Hyp |
Ref |
Expression |
1 |
|
ofrfvalg.1 |
|
2 |
|
ofrfvalg.2 |
|
3 |
|
ofrfvalg.3 |
|
4 |
|
ofrfvalg.4 |
|
5 |
|
ofrfvalg.5 |
|
6 |
|
ofrfvalg.6 |
|
7 |
|
ofrfvalg.7 |
|
8 |
|
dmeq |
|
9 |
|
dmeq |
|
10 |
8 9
|
ineqan12d |
|
11 |
|
fveq1 |
|
12 |
|
fveq1 |
|
13 |
11 12
|
breqan12d |
|
14 |
10 13
|
raleqbidv |
|
15 |
|
df-ofr |
|
16 |
14 15
|
brabga |
|
17 |
3 4 16
|
syl2anc |
|
18 |
1
|
fndmd |
|
19 |
2
|
fndmd |
|
20 |
18 19
|
ineq12d |
|
21 |
20 5
|
eqtrdi |
|
22 |
21
|
raleqdv |
|
23 |
|
inss1 |
|
24 |
5 23
|
eqsstrri |
|
25 |
24
|
sseli |
|
26 |
25 6
|
sylan2 |
|
27 |
|
inss2 |
|
28 |
5 27
|
eqsstrri |
|
29 |
28
|
sseli |
|
30 |
29 7
|
sylan2 |
|
31 |
26 30
|
breq12d |
|
32 |
31
|
ralbidva |
|
33 |
17 22 32
|
3bitrd |
|