Step |
Hyp |
Ref |
Expression |
1 |
|
1on |
|
2 |
1
|
a1i |
|
3 |
|
fvexd |
|
4 |
|
simpll |
|
5 |
|
df1o2 |
|
6 |
|
nn0ex |
|
7 |
|
0ex |
|
8 |
5 6 7
|
mapsnconst |
|
9 |
8
|
adantl |
|
10 |
|
fconstmpt |
|
11 |
9 10
|
eqtrdi |
|
12 |
|
fconstmpt |
|
13 |
12
|
a1i |
|
14 |
2 3 4 11 13
|
ofrfval2 |
|
15 |
|
1n0 |
|
16 |
|
r19.3rzv |
|
17 |
15 16
|
mp1i |
|
18 |
|
elmapi |
|
19 |
|
0lt1o |
|
20 |
|
ffvelrn |
|
21 |
18 19 20
|
sylancl |
|
22 |
21
|
adantl |
|
23 |
22
|
biantrurd |
|
24 |
|
fznn0 |
|
25 |
24
|
adantr |
|
26 |
23 25
|
bitr4d |
|
27 |
14 17 26
|
3bitr2d |
|