Step |
Hyp |
Ref |
Expression |
1 |
|
deg1leb.d |
|
2 |
|
deg1leb.p |
|
3 |
|
deg1leb.b |
|
4 |
|
deg1leb.y |
|
5 |
|
deg1leb.a |
|
6 |
1
|
deg1fval |
|
7 |
|
eqid |
|
8 |
|
eqid |
|
9 |
2 8 3
|
ply1bas |
|
10 |
|
psr1baslem |
|
11 |
|
tdeglem2 |
|
12 |
6 7 9 4 10 11
|
mdegleb |
|
13 |
|
df1o2 |
|
14 |
|
nn0ex |
|
15 |
|
0ex |
|
16 |
|
eqid |
|
17 |
13 14 15 16
|
mapsnf1o2 |
|
18 |
|
f1ofo |
|
19 |
|
breq2 |
|
20 |
|
fveqeq2 |
|
21 |
19 20
|
imbi12d |
|
22 |
21
|
cbvfo |
|
23 |
17 18 22
|
mp2b |
|
24 |
|
fveq1 |
|
25 |
|
fvex |
|
26 |
24 16 25
|
fvmpt |
|
27 |
26
|
fveq2d |
|
28 |
27
|
adantl |
|
29 |
5
|
fvcoe1 |
|
30 |
29
|
adantlr |
|
31 |
28 30
|
eqtr4d |
|
32 |
31
|
eqeq1d |
|
33 |
32
|
imbi2d |
|
34 |
33
|
ralbidva |
|
35 |
23 34
|
bitr3id |
|
36 |
12 35
|
bitr4d |
|