Step |
Hyp |
Ref |
Expression |
1 |
|
ablnncan.b |
|
2 |
|
ablnncan.m |
|
3 |
|
ablnncan.g |
|
4 |
|
ablnncan.x |
|
5 |
|
ablnncan.y |
|
6 |
|
ablsub32.z |
|
7 |
|
eqid |
|
8 |
|
ablgrp |
|
9 |
3 8
|
syl |
|
10 |
1 2
|
grpsubcl |
|
11 |
9 5 6 10
|
syl3anc |
|
12 |
1 7 2 3 4 11 6
|
ablsubsub4 |
|
13 |
1 7
|
ablcom |
|
14 |
3 11 6 13
|
syl3anc |
|
15 |
1 7 2
|
ablpncan3 |
|
16 |
3 6 5 15
|
syl12anc |
|
17 |
14 16
|
eqtrd |
|
18 |
17
|
oveq2d |
|
19 |
12 18
|
eqtrd |
|