Step |
Hyp |
Ref |
Expression |
1 |
|
indstr2.1 |
|
2 |
|
indstr2.2 |
|
3 |
|
indstr2.3 |
|
4 |
|
indstr2.4 |
|
5 |
|
elnn1uz2 |
|
6 |
|
nnnlt1 |
|
7 |
6
|
adantl |
|
8 |
|
breq2 |
|
9 |
8
|
adantr |
|
10 |
7 9
|
mtbird |
|
11 |
10
|
pm2.21d |
|
12 |
11
|
ralrimiva |
|
13 |
|
pm5.5 |
|
14 |
12 13
|
syl |
|
15 |
14 1
|
bitrd |
|
16 |
3 15
|
mpbiri |
|
17 |
16 4
|
jaoi |
|
18 |
5 17
|
sylbi |
|
19 |
2 18
|
indstr |
|