Step |
Hyp |
Ref |
Expression |
1 |
|
rimrcl |
|
2 |
|
rhmrcl1 |
|
3 |
2
|
elexd |
|
4 |
|
rhmrcl2 |
|
5 |
4
|
elexd |
|
6 |
3 5
|
jca |
|
7 |
6
|
adantr |
|
8 |
|
df-rngiso |
|
9 |
8
|
a1i |
|
10 |
|
oveq12 |
|
11 |
10
|
adantl |
|
12 |
|
oveq12 |
|
13 |
12
|
ancoms |
|
14 |
13
|
adantl |
|
15 |
14
|
eleq2d |
|
16 |
11 15
|
rabeqbidv |
|
17 |
|
simpl |
|
18 |
|
simpr |
|
19 |
|
ovex |
|
20 |
19
|
rabex |
|
21 |
20
|
a1i |
|
22 |
9 16 17 18 21
|
ovmpod |
|
23 |
22
|
eleq2d |
|
24 |
|
cnveq |
|
25 |
24
|
eleq1d |
|
26 |
25
|
elrab |
|
27 |
23 26
|
bitrdi |
|
28 |
1 7 27
|
pm5.21nii |
|