Step |
Hyp |
Ref |
Expression |
1 |
|
drngid2.b |
|
2 |
|
drngid2.t |
|
3 |
|
drngid2.o |
|
4 |
|
drngid2.u |
|
5 |
|
df-3an |
|
6 |
|
eldifsn |
|
7 |
6
|
anbi1i |
|
8 |
5 7
|
bitr4i |
|
9 |
|
eqid |
|
10 |
1 3 9
|
drngmgp |
|
11 |
|
difss |
|
12 |
|
eqid |
|
13 |
12 1
|
mgpbas |
|
14 |
9 13
|
ressbas2 |
|
15 |
11 14
|
ax-mp |
|
16 |
1
|
fvexi |
|
17 |
|
difexg |
|
18 |
12 2
|
mgpplusg |
|
19 |
9 18
|
ressplusg |
|
20 |
16 17 19
|
mp2b |
|
21 |
|
eqid |
|
22 |
15 20 21
|
isgrpid2 |
|
23 |
10 22
|
syl |
|
24 |
8 23
|
syl5bb |
|
25 |
1 3 4 9
|
drngid |
|
26 |
25
|
eqeq1d |
|
27 |
24 26
|
bitr4d |
|