Step |
Hyp |
Ref |
Expression |
1 |
|
rrnheibor.1 |
|
2 |
|
rrnheibor.2 |
|
3 |
|
rrnheibor.3 |
|
4 |
|
rrnheibor.4 |
|
5 |
1
|
rrnmet |
|
6 |
|
metres2 |
|
7 |
2 6
|
eqeltrid |
|
8 |
5 7
|
sylan |
|
9 |
8
|
biantrurd |
|
10 |
3
|
heibor |
|
11 |
9 10
|
syl6bb |
|
12 |
2
|
eleq1i |
|
13 |
1
|
rrncms |
|
14 |
13
|
adantr |
|
15 |
4
|
cmetss |
|
16 |
14 15
|
syl |
|
17 |
12 16
|
syl5bb |
|
18 |
1 2
|
rrntotbnd |
|
19 |
18
|
adantr |
|
20 |
17 19
|
anbi12d |
|
21 |
11 20
|
bitrd |
|