Step |
Hyp |
Ref |
Expression |
1 |
|
dchr1.g |
|
2 |
|
dchr1.z |
|
3 |
|
dchr1.o |
|
4 |
|
dchr1.u |
|
5 |
|
dchr1.n |
|
6 |
|
dchr1.a |
|
7 |
|
eqid |
|
8 |
|
eqid |
|
9 |
|
eqid |
|
10 |
1 2 7 8 4 9 5
|
dchr1cl |
|
11 |
|
eleq1w |
|
12 |
11
|
ifbid |
|
13 |
12
|
cbvmptv |
|
14 |
|
eqid |
|
15 |
1 2 7 8 4 13 14 10
|
dchrmulid2 |
|
16 |
1
|
dchrabl |
|
17 |
|
ablgrp |
|
18 |
7 14 3
|
isgrpid2 |
|
19 |
5 16 17 18
|
4syl |
|
20 |
10 15 19
|
mpbi2and |
|
21 |
|
simpr |
|
22 |
6
|
adantr |
|
23 |
21 22
|
eqeltrd |
|
24 |
23
|
iftrued |
|
25 |
8 4
|
unitss |
|
26 |
25 6
|
sseldi |
|
27 |
|
1cnd |
|
28 |
20 24 26 27
|
fvmptd |
|