Step |
Hyp |
Ref |
Expression |
1 |
|
oveq2 |
|
2 |
1
|
eqcoms |
|
3 |
|
rpcn |
|
4 |
3
|
adantr |
|
5 |
|
rpne0 |
|
6 |
5
|
adantr |
|
7 |
|
simpr |
|
8 |
|
eldifpr |
|
9 |
4 6 7 8
|
syl3anbrc |
|
10 |
|
rpcndif0 |
|
11 |
9 10
|
anim12i |
|
12 |
11
|
3adant3 |
|
13 |
|
cxplogb |
|
14 |
12 13
|
syl |
|
15 |
2 14
|
sylan9eqr |
|
16 |
|
oveq2 |
|
17 |
16
|
eqcoms |
|
18 |
|
eldifsn |
|
19 |
18
|
biimpri |
|
20 |
19
|
anim1i |
|
21 |
20
|
3adant2 |
|
22 |
|
relogbcxp |
|
23 |
21 22
|
syl |
|
24 |
17 23
|
sylan9eqr |
|
25 |
15 24
|
impbida |
|