Step |
Hyp |
Ref |
Expression |
1 |
|
cshwshash.0 |
|
2 |
|
orc |
|
3 |
2
|
a1d |
|
4 |
|
simprl |
|
5 |
|
simprrl |
|
6 |
|
simprrr |
|
7 |
|
necom |
|
8 |
7
|
biimpi |
|
9 |
8
|
adantr |
|
10 |
1
|
cshwshashlem3 |
|
11 |
10
|
imp |
|
12 |
4 5 6 9 11
|
syl13anc |
|
13 |
|
disjsn2 |
|
14 |
12 13
|
syl |
|
15 |
14
|
olcd |
|
16 |
15
|
ex |
|
17 |
3 16
|
pm2.61ine |
|
18 |
17
|
ralrimivva |
|
19 |
|
oveq2 |
|
20 |
19
|
sneqd |
|
21 |
20
|
disjor |
|
22 |
18 21
|
sylibr |
|