Step |
Hyp |
Ref |
Expression |
1 |
|
df-le |
|
2 |
1
|
ineq1i |
|
3 |
|
indif1 |
|
4 |
2 3
|
eqtri |
|
5 |
|
xpss12 |
|
6 |
5
|
anidms |
|
7 |
|
sseqin2 |
|
8 |
6 7
|
sylib |
|
9 |
8
|
difeq1d |
|
10 |
4 9
|
eqtr2id |
|
11 |
|
isoeq2 |
|
12 |
10 11
|
syl |
|
13 |
1
|
ineq1i |
|
14 |
|
indif1 |
|
15 |
13 14
|
eqtri |
|
16 |
|
xpss12 |
|
17 |
16
|
anidms |
|
18 |
|
sseqin2 |
|
19 |
17 18
|
sylib |
|
20 |
19
|
difeq1d |
|
21 |
15 20
|
eqtr2id |
|
22 |
|
isoeq3 |
|
23 |
21 22
|
syl |
|
24 |
12 23
|
sylan9bb |
|
25 |
|
isocnv2 |
|
26 |
|
eqid |
|
27 |
|
eqid |
|
28 |
26 27
|
isocnv3 |
|
29 |
25 28
|
bitri |
|
30 |
|
isores1 |
|
31 |
|
isores2 |
|
32 |
30 31
|
bitri |
|
33 |
24 29 32
|
3bitr4g |
|