Step |
Hyp |
Ref |
Expression |
1 |
|
idlsrgtset.1 |
|
2 |
|
idlsrgtset.2 |
|
3 |
|
idlsrgtset.3 |
|
4 |
2
|
fvexi |
|
5 |
4
|
mptex |
|
6 |
5
|
rnex |
|
7 |
|
eqid |
|
8 |
7
|
idlsrgstr |
|
9 |
|
tsetid |
|
10 |
|
snsspr1 |
|
11 |
|
ssun2 |
|
12 |
10 11
|
sstri |
|
13 |
8 9 12
|
strfv |
|
14 |
6 13
|
ax-mp |
|
15 |
|
eqid |
|
16 |
|
eqid |
|
17 |
|
eqid |
|
18 |
2 15 16 17
|
idlsrgval |
|
19 |
1 18
|
eqtrid |
|
20 |
19
|
fveq2d |
|
21 |
14 20
|
eqtr4id |
|
22 |
3 21
|
eqtrid |
|