Step |
Hyp |
Ref |
Expression |
1 |
|
ackval1 |
|
2 |
|
oveq1 |
|
3 |
|
2cn |
|
4 |
3
|
addlidi |
|
5 |
2 4
|
eqtrdi |
|
6 |
|
0nn0 |
|
7 |
6
|
a1i |
|
8 |
|
2nn0 |
|
9 |
8
|
a1i |
|
10 |
1 5 7 9
|
fvmptd3 |
|
11 |
|
oveq1 |
|
12 |
|
1p2e3 |
|
13 |
11 12
|
eqtrdi |
|
14 |
|
1nn0 |
|
15 |
14
|
a1i |
|
16 |
|
3nn0 |
|
17 |
16
|
a1i |
|
18 |
1 13 15 17
|
fvmptd3 |
|
19 |
|
oveq1 |
|
20 |
|
2p2e4 |
|
21 |
19 20
|
eqtrdi |
|
22 |
|
4nn0 |
|
23 |
22
|
a1i |
|
24 |
1 21 9 23
|
fvmptd3 |
|
25 |
10 18 24
|
oteq123d |
|
26 |
1 25
|
ax-mp |
|