Step |
Hyp |
Ref |
Expression |
1 |
|
isline4.b |
|
2 |
|
isline4.c |
|
3 |
|
isline4.a |
|
4 |
|
isline4.n |
|
5 |
|
isline4.m |
|
6 |
|
eqid |
|
7 |
1 6 3 4 5
|
isline3 |
|
8 |
|
simpll |
|
9 |
1 3
|
atbase |
|
10 |
9
|
adantl |
|
11 |
|
simplr |
|
12 |
|
eqid |
|
13 |
1 12 6 2 3
|
cvrval3 |
|
14 |
8 10 11 13
|
syl3anc |
|
15 |
|
hlatl |
|
16 |
15
|
ad3antrrr |
|
17 |
|
simpr |
|
18 |
|
simplr |
|
19 |
12 3
|
atncmp |
|
20 |
16 17 18 19
|
syl3anc |
|
21 |
|
necom |
|
22 |
20 21
|
syl6bb |
|
23 |
|
eqcom |
|
24 |
23
|
a1i |
|
25 |
22 24
|
anbi12d |
|
26 |
25
|
rexbidva |
|
27 |
14 26
|
bitrd |
|
28 |
27
|
rexbidva |
|
29 |
7 28
|
bitr4d |
|