| 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 |
|