Step |
Hyp |
Ref |
Expression |
1 |
|
ovnssle.1 |
|
2 |
|
ovnssle.2 |
|
3 |
|
ovnssle.3 |
|
4 |
|
0le0 |
|
5 |
4
|
a1i |
|
6 |
|
fveq2 |
|
7 |
6
|
fveq1d |
|
8 |
7
|
adantl |
|
9 |
2
|
adantr |
|
10 |
3
|
adantr |
|
11 |
|
simpr |
|
12 |
11
|
oveq2d |
|
13 |
10 12
|
sseqtrd |
|
14 |
9 13
|
sstrd |
|
15 |
14
|
ovn0val |
|
16 |
8 15
|
eqtrd |
|
17 |
6
|
fveq1d |
|
18 |
17
|
adantl |
|
19 |
13
|
ovn0val |
|
20 |
18 19
|
eqtrd |
|
21 |
16 20
|
breq12d |
|
22 |
5 21
|
mpbird |
|
23 |
1
|
adantr |
|
24 |
|
neqne |
|
25 |
24
|
adantl |
|
26 |
2
|
adantr |
|
27 |
3
|
adantr |
|
28 |
|
eqid |
|
29 |
|
eqid |
|
30 |
23 25 26 27 28 29
|
ovnsslelem |
|
31 |
22 30
|
pm2.61dan |
|