Step |
Hyp |
Ref |
Expression |
1 |
|
dmdbr |
|
2 |
|
chincl |
|
3 |
2
|
ancoms |
|
4 |
3
|
adantlr |
|
5 |
|
simplr |
|
6 |
|
simpr |
|
7 |
|
inss1 |
|
8 |
|
chlub |
|
9 |
8
|
biimpd |
|
10 |
7 9
|
mpani |
|
11 |
4 5 6 10
|
syl3anc |
|
12 |
|
simpll |
|
13 |
|
inss2 |
|
14 |
|
chlej1 |
|
15 |
13 14
|
mpan2 |
|
16 |
4 12 5 15
|
syl3anc |
|
17 |
11 16
|
jctird |
|
18 |
|
ssin |
|
19 |
17 18
|
syl6ib |
|
20 |
|
eqss |
|
21 |
20
|
baib |
|
22 |
19 21
|
syl6 |
|
23 |
22
|
pm5.74d |
|
24 |
23
|
ralbidva |
|
25 |
1 24
|
bitrd |
|