Step |
Hyp |
Ref |
Expression |
1 |
|
dvhvadd.h |
|
2 |
|
dvhvadd.t |
|
3 |
|
dvhvadd.e |
|
4 |
|
dvhvadd.u |
|
5 |
|
dvhvadd.f |
|
6 |
|
dvhvadd.s |
|
7 |
|
dvhvadd.p |
|
8 |
|
simp1 |
|
9 |
|
opelxpi |
|
10 |
9
|
3ad2ant2 |
|
11 |
|
opelxpi |
|
12 |
11
|
3ad2ant3 |
|
13 |
1 2 3 4 5 6 7
|
dvhvadd |
|
14 |
8 10 12 13
|
syl12anc |
|
15 |
|
op1stg |
|
16 |
15
|
3ad2ant2 |
|
17 |
|
op1stg |
|
18 |
17
|
3ad2ant3 |
|
19 |
16 18
|
coeq12d |
|
20 |
|
op2ndg |
|
21 |
20
|
3ad2ant2 |
|
22 |
|
op2ndg |
|
23 |
22
|
3ad2ant3 |
|
24 |
21 23
|
oveq12d |
|
25 |
19 24
|
opeq12d |
|
26 |
14 25
|
eqtrd |
|