Step |
Hyp |
Ref |
Expression |
1 |
|
carsgval.1 |
|
2 |
|
carsgval.2 |
|
3 |
|
carsgmon.1 |
|
4 |
|
carsgmon.2 |
|
5 |
|
carsgmon.3 |
|
6 |
4 3
|
ssexd |
|
7 |
|
id |
|
8 |
|
sseq1 |
|
9 |
8
|
3anbi2d |
|
10 |
|
fveq2 |
|
11 |
10
|
breq1d |
|
12 |
9 11
|
imbi12d |
|
13 |
|
sseq2 |
|
14 |
|
eleq1 |
|
15 |
13 14
|
3anbi23d |
|
16 |
|
fveq2 |
|
17 |
16
|
breq2d |
|
18 |
15 17
|
imbi12d |
|
19 |
12 18 5
|
vtocl2g |
|
20 |
19
|
imp |
|
21 |
6 4 7 3 4 20
|
syl23anc |
|