Step |
Hyp |
Ref |
Expression |
1 |
|
cantnfs.s |
|
2 |
|
cantnfs.a |
|
3 |
|
cantnfs.b |
|
4 |
|
oemapval.t |
|
5 |
|
oemapval.f |
|
6 |
|
oemapval.g |
|
7 |
|
fveq1 |
|
8 |
|
fveq1 |
|
9 |
|
eleq12 |
|
10 |
7 8 9
|
syl2an |
|
11 |
|
fveq1 |
|
12 |
|
fveq1 |
|
13 |
11 12
|
eqeqan12d |
|
14 |
13
|
imbi2d |
|
15 |
14
|
ralbidv |
|
16 |
10 15
|
anbi12d |
|
17 |
16
|
rexbidv |
|
18 |
17 4
|
brabga |
|
19 |
5 6 18
|
syl2anc |
|