Step |
Hyp |
Ref |
Expression |
0 |
|
cfwddif |
|
1 |
|
vf |
|
2 |
|
cc |
|
3 |
|
cpm |
|
4 |
2 2 3
|
co |
|
5 |
|
vx |
|
6 |
|
vy |
|
7 |
1
|
cv |
|
8 |
7
|
cdm |
|
9 |
6
|
cv |
|
10 |
|
caddc |
|
11 |
|
c1 |
|
12 |
9 11 10
|
co |
|
13 |
12 8
|
wcel |
|
14 |
13 6 8
|
crab |
|
15 |
5
|
cv |
|
16 |
15 11 10
|
co |
|
17 |
16 7
|
cfv |
|
18 |
|
cmin |
|
19 |
15 7
|
cfv |
|
20 |
17 19 18
|
co |
|
21 |
5 14 20
|
cmpt |
|
22 |
1 4 21
|
cmpt |
|
23 |
0 22
|
wceq |
|