Step |
Hyp |
Ref |
Expression |
1 |
|
rrxdim.1 |
|
2 |
1
|
rrxval |
|
3 |
|
eqid |
|
4 |
|
eqid |
|
5 |
|
eqid |
|
6 |
3 4 5
|
tcphval |
|
7 |
2 6
|
eqtrdi |
|
8 |
7
|
fveq2d |
|
9 |
|
resubdrg |
|
10 |
9
|
simpri |
|
11 |
|
eqid |
|
12 |
11
|
frlmlvec |
|
13 |
10 12
|
mpan |
|
14 |
4
|
tcphex |
|
15 |
|
eqid |
|
16 |
15
|
tngdim |
|
17 |
13 14 16
|
sylancl |
|
18 |
11
|
frlmdim |
|
19 |
10 18
|
mpan |
|
20 |
8 17 19
|
3eqtr2d |
|