Step |
Hyp |
Ref |
Expression |
1 |
|
dssmapfvd.o |
|
2 |
|
dssmapfvd.d |
|
3 |
|
dssmapfvd.b |
|
4 |
|
dssmapfv2d.f |
|
5 |
|
dssmapfv2d.g |
|
6 |
|
dssmapfv3d.s |
|
7 |
|
dssmapfv3d.t |
|
8 |
1 2 3 4 5
|
dssmapfv2d |
|
9 |
|
difeq2 |
|
10 |
9
|
fveq2d |
|
11 |
10
|
difeq2d |
|
12 |
11
|
adantl |
|
13 |
|
difexg |
|
14 |
3 13
|
syl |
|
15 |
8 12 6 14
|
fvmptd |
|
16 |
7 15
|
syl5eq |
|