Step |
Hyp |
Ref |
Expression |
1 |
|
polfval.o |
|
2 |
|
polfval.a |
|
3 |
|
polfval.m |
|
4 |
|
polfval.p |
|
5 |
|
elex |
|
6 |
|
fveq2 |
|
7 |
6 2
|
eqtr4di |
|
8 |
7
|
pweqd |
|
9 |
|
fveq2 |
|
10 |
9 3
|
eqtr4di |
|
11 |
|
fveq2 |
|
12 |
11 1
|
eqtr4di |
|
13 |
12
|
fveq1d |
|
14 |
10 13
|
fveq12d |
|
15 |
14
|
adantr |
|
16 |
15
|
iineq2dv |
|
17 |
7 16
|
ineq12d |
|
18 |
8 17
|
mpteq12dv |
|
19 |
|
df-polarityN |
|
20 |
2
|
fvexi |
|
21 |
20
|
pwex |
|
22 |
21
|
mptex |
|
23 |
18 19 22
|
fvmpt |
|
24 |
4 23
|
eqtrid |
|
25 |
5 24
|
syl |
|