Step |
Hyp |
Ref |
Expression |
1 |
|
signsv.p |
|
2 |
|
signsv.w |
|
3 |
|
signsv.t |
|
4 |
|
signsv.v |
|
5 |
|
0re |
|
6 |
1 2 3 4
|
signsvfn |
|
7 |
5 6
|
mpan2 |
|
8 |
5
|
ltnri |
|
9 |
|
neg1cn |
|
10 |
|
ax-1cn |
|
11 |
|
prssi |
|
12 |
9 10 11
|
mp2an |
|
13 |
|
simpl |
|
14 |
|
eldifsn |
|
15 |
13 14
|
sylib |
|
16 |
|
lennncl |
|
17 |
|
fzo0end |
|
18 |
15 16 17
|
3syl |
|
19 |
1 2 3 4
|
signstfvcl |
|
20 |
18 19
|
mpdan |
|
21 |
12 20
|
sselid |
|
22 |
21
|
mul01d |
|
23 |
22
|
breq1d |
|
24 |
8 23
|
mtbiri |
|
25 |
24
|
iffalsed |
|
26 |
25
|
oveq2d |
|
27 |
1 2 3 4
|
signsvvf |
|
28 |
27
|
a1i |
|
29 |
13
|
eldifad |
|
30 |
28 29
|
ffvelrnd |
|
31 |
30
|
nn0cnd |
|
32 |
31
|
addid1d |
|
33 |
7 26 32
|
3eqtrd |
|