| Step |
Hyp |
Ref |
Expression |
| 1 |
|
ltrnset.l |
|
| 2 |
|
ltrnset.j |
|
| 3 |
|
ltrnset.m |
|
| 4 |
|
ltrnset.a |
|
| 5 |
|
ltrnset.h |
|
| 6 |
|
elex |
|
| 7 |
|
fveq2 |
|
| 8 |
7 5
|
eqtr4di |
|
| 9 |
|
fveq2 |
|
| 10 |
9
|
fveq1d |
|
| 11 |
|
fveq2 |
|
| 12 |
11 4
|
eqtr4di |
|
| 13 |
|
fveq2 |
|
| 14 |
13 1
|
eqtr4di |
|
| 15 |
14
|
breqd |
|
| 16 |
15
|
notbid |
|
| 17 |
14
|
breqd |
|
| 18 |
17
|
notbid |
|
| 19 |
16 18
|
anbi12d |
|
| 20 |
|
fveq2 |
|
| 21 |
20 3
|
eqtr4di |
|
| 22 |
|
fveq2 |
|
| 23 |
22 2
|
eqtr4di |
|
| 24 |
23
|
oveqd |
|
| 25 |
|
eqidd |
|
| 26 |
21 24 25
|
oveq123d |
|
| 27 |
23
|
oveqd |
|
| 28 |
21 27 25
|
oveq123d |
|
| 29 |
26 28
|
eqeq12d |
|
| 30 |
19 29
|
imbi12d |
|
| 31 |
12 30
|
raleqbidv |
|
| 32 |
12 31
|
raleqbidv |
|
| 33 |
10 32
|
rabeqbidv |
|
| 34 |
8 33
|
mpteq12dv |
|
| 35 |
|
df-ltrn |
|
| 36 |
34 35 5
|
mptfvmpt |
|
| 37 |
6 36
|
syl |
|