Step |
Hyp |
Ref |
Expression |
1 |
|
rrgval.e |
|
2 |
|
rrgval.b |
|
3 |
|
rrgval.t |
|
4 |
|
rrgval.z |
|
5 |
|
fveq2 |
|
6 |
5 2
|
eqtr4di |
|
7 |
|
fveq2 |
|
8 |
7 3
|
eqtr4di |
|
9 |
8
|
oveqd |
|
10 |
|
fveq2 |
|
11 |
10 4
|
eqtr4di |
|
12 |
9 11
|
eqeq12d |
|
13 |
11
|
eqeq2d |
|
14 |
12 13
|
imbi12d |
|
15 |
6 14
|
raleqbidv |
|
16 |
6 15
|
rabeqbidv |
|
17 |
|
df-rlreg |
|
18 |
2
|
fvexi |
|
19 |
18
|
rabex |
|
20 |
16 17 19
|
fvmpt |
|
21 |
|
fvprc |
|
22 |
|
fvprc |
|
23 |
2 22
|
eqtrid |
|
24 |
23
|
rabeqdv |
|
25 |
|
rab0 |
|
26 |
24 25
|
eqtrdi |
|
27 |
21 26
|
eqtr4d |
|
28 |
20 27
|
pm2.61i |
|
29 |
1 28
|
eqtri |
|