Step |
Hyp |
Ref |
Expression |
1 |
|
ovexd |
|
2 |
|
snex |
|
3 |
2
|
a1i |
|
4 |
|
simpl |
|
5 |
4
|
a1d |
|
6 |
2
|
a1i |
|
7 |
6
|
anim1ci |
|
8 |
|
xpexg |
|
9 |
7 8
|
syl |
|
10 |
9
|
a1d |
|
11 |
|
velsn |
|
12 |
11
|
a1i |
|
13 |
|
elmapg |
|
14 |
6 13
|
sylan |
|
15 |
|
fconst2g |
|
16 |
15
|
adantr |
|
17 |
14 16
|
bitr2d |
|
18 |
12 17
|
anbi12d |
|
19 |
|
ancom |
|
20 |
18 19
|
bitr2di |
|
21 |
1 3 5 10 20
|
en2d |
|