Step |
Hyp |
Ref |
Expression |
1 |
|
btwnlng1.p |
|
2 |
|
btwnlng1.i |
|
3 |
|
btwnlng1.l |
|
4 |
|
btwnlng1.g |
|
5 |
|
btwnlng1.x |
|
6 |
|
btwnlng1.y |
|
7 |
|
btwnlng1.z |
|
8 |
|
btwnlng1.d |
|
9 |
|
lncom.1 |
|
10 |
|
3orcomb |
|
11 |
|
eqid |
|
12 |
1 11 2 4 5 7 6
|
tgbtwncomb |
|
13 |
1 11 2 4 5 6 7
|
tgbtwncomb |
|
14 |
1 11 2 4 7 5 6
|
tgbtwncomb |
|
15 |
12 13 14
|
3orbi123d |
|
16 |
10 15
|
syl5bb |
|
17 |
1 3 2 4 5 6 8 7
|
tgellng |
|
18 |
8
|
necomd |
|
19 |
1 3 2 4 6 5 18 7
|
tgellng |
|
20 |
16 17 19
|
3bitr4d |
|
21 |
9 20
|
mpbird |
|