Step |
Hyp |
Ref |
Expression |
1 |
|
uzinico2.1 |
|
2 |
|
inass |
|
3 |
2
|
a1i |
|
4 |
|
incom |
|
5 |
4
|
a1i |
|
6 |
|
uzssz |
|
7 |
6
|
a1i |
|
8 |
7 1
|
sseldd |
|
9 |
|
eqid |
|
10 |
8 9
|
uzinico |
|
11 |
10
|
eqcomd |
|
12 |
11
|
ineq1d |
|
13 |
1
|
uzssd |
|
14 |
|
df-ss |
|
15 |
13 14
|
sylib |
|
16 |
5 12 15
|
3eqtrd |
|
17 |
|
uzssz |
|
18 |
|
df-ss |
|
19 |
17 18
|
mpbi |
|
20 |
19
|
a1i |
|
21 |
20
|
eqcomd |
|
22 |
3 16 21
|
3eqtrrd |
|
23 |
|
df-ss |
|
24 |
6 23
|
mpbi |
|
25 |
24
|
ineq1i |
|
26 |
25
|
a1i |
|
27 |
22 20 26
|
3eqtr3d |
|