| Step |
Hyp |
Ref |
Expression |
| 1 |
|
dmdbr4 |
|
| 2 |
|
chub1 |
|
| 3 |
2
|
ancoms |
|
| 4 |
|
ssin |
|
| 5 |
|
sstr2 |
|
| 6 |
4 5
|
sylbi |
|
| 7 |
3 6
|
sylan |
|
| 8 |
7
|
ex |
|
| 9 |
8
|
com23 |
|
| 10 |
9
|
ralimdva |
|
| 11 |
10
|
adantl |
|
| 12 |
1 11
|
sylbid |
|
| 13 |
|
sseq1 |
|
| 14 |
|
id |
|
| 15 |
|
oveq1 |
|
| 16 |
15
|
ineq1d |
|
| 17 |
16
|
oveq1d |
|
| 18 |
14 17
|
sseq12d |
|
| 19 |
13 18
|
imbi12d |
|
| 20 |
19
|
rspccv |
|
| 21 |
|
chjcl |
|
| 22 |
21
|
ancoms |
|
| 23 |
22
|
adantll |
|
| 24 |
|
chjcl |
|
| 25 |
24
|
adantr |
|
| 26 |
|
chincl |
|
| 27 |
23 25 26
|
syl2anc |
|
| 28 |
|
inss2 |
|
| 29 |
|
pm2.27 |
|
| 30 |
28 29
|
mpii |
|
| 31 |
27 30
|
syl |
|
| 32 |
|
chub2 |
|
| 33 |
32
|
adantll |
|
| 34 |
|
chub2 |
|
| 35 |
34
|
ancoms |
|
| 36 |
35
|
adantr |
|
| 37 |
33 36
|
ssind |
|
| 38 |
|
simplr |
|
| 39 |
|
chlejb2 |
|
| 40 |
38 27 39
|
syl2anc |
|
| 41 |
37 40
|
mpbid |
|
| 42 |
41
|
ineq1d |
|
| 43 |
|
inass |
|
| 44 |
|
incom |
|
| 45 |
|
chabs2 |
|
| 46 |
44 45
|
eqtrid |
|
| 47 |
46
|
ineq2d |
|
| 48 |
43 47
|
eqtrid |
|
| 49 |
48
|
adantr |
|
| 50 |
42 49
|
eqtrd |
|
| 51 |
50
|
oveq1d |
|
| 52 |
51
|
sseq2d |
|
| 53 |
31 52
|
sylibd |
|
| 54 |
53
|
ex |
|
| 55 |
54
|
com23 |
|
| 56 |
20 55
|
syl5 |
|
| 57 |
56
|
ralrimdv |
|
| 58 |
|
dmdbr4 |
|
| 59 |
57 58
|
sylibrd |
|
| 60 |
12 59
|
impbid |
|