Step |
Hyp |
Ref |
Expression |
1 |
|
abelth.1 |
|
2 |
|
abelth.2 |
|
3 |
|
abs1 |
|
4 |
|
eqid |
|
5 |
|
eqid |
|
6 |
|
1cnd |
|
7 |
1
|
feqmptd |
|
8 |
1
|
ffvelrnda |
|
9 |
8
|
mulid1d |
|
10 |
9
|
mpteq2dva |
|
11 |
7 10
|
eqtr4d |
|
12 |
|
ax-1cn |
|
13 |
|
oveq1 |
|
14 |
|
nn0z |
|
15 |
|
1exp |
|
16 |
14 15
|
syl |
|
17 |
13 16
|
sylan9eq |
|
18 |
17
|
oveq2d |
|
19 |
18
|
mpteq2dva |
|
20 |
|
nn0ex |
|
21 |
20
|
mptex |
|
22 |
19 4 21
|
fvmpt |
|
23 |
12 22
|
ax-mp |
|
24 |
11 23
|
eqtr4di |
|
25 |
24
|
seqeq3d |
|
26 |
25 2
|
eqeltrrd |
|
27 |
4 1 5 6 26
|
radcnvle |
|
28 |
3 27
|
eqbrtrrid |
|