Step |
Hyp |
Ref |
Expression |
1 |
|
lauteq.b |
|
2 |
|
lauteq.a |
|
3 |
|
lauteq.i |
|
4 |
|
simpl1 |
|
5 |
|
simpl2 |
|
6 |
1 2
|
atbase |
|
7 |
6
|
adantl |
|
8 |
|
simpl3 |
|
9 |
|
eqid |
|
10 |
1 9 3
|
lautle |
|
11 |
4 5 7 8 10
|
syl22anc |
|
12 |
|
breq1 |
|
13 |
11 12
|
sylan9bb |
|
14 |
13
|
bicomd |
|
15 |
14
|
ex |
|
16 |
15
|
ralimdva |
|
17 |
16
|
imp |
|
18 |
|
simpl1 |
|
19 |
|
simpl2 |
|
20 |
|
simpl3 |
|
21 |
1 3
|
lautcl |
|
22 |
18 19 20 21
|
syl21anc |
|
23 |
1 9 2
|
hlateq |
|
24 |
18 22 20 23
|
syl3anc |
|
25 |
17 24
|
mpbid |
|