Step |
Hyp |
Ref |
Expression |
1 |
|
mstaval.r |
|
2 |
|
mstaval.s |
|
3 |
|
eqid |
|
4 |
3 1
|
msrf |
|
5 |
|
ffn |
|
6 |
|
fvelrnb |
|
7 |
4 5 6
|
mp2b |
|
8 |
3
|
mpst123 |
|
9 |
8
|
fveq2d |
|
10 |
|
id |
|
11 |
8 10
|
eqeltrrd |
|
12 |
|
eqid |
|
13 |
|
eqid |
|
14 |
12 3 1 13
|
msrval |
|
15 |
11 14
|
syl |
|
16 |
9 15
|
eqtrd |
|
17 |
4
|
ffvelrni |
|
18 |
16 17
|
eqeltrrd |
|
19 |
12 3 1 13
|
msrval |
|
20 |
18 19
|
syl |
|
21 |
|
inass |
|
22 |
|
inidm |
|
23 |
22
|
ineq2i |
|
24 |
21 23
|
eqtri |
|
25 |
24
|
a1i |
|
26 |
25
|
oteq1d |
|
27 |
20 26
|
eqtrd |
|
28 |
16
|
fveq2d |
|
29 |
27 28 16
|
3eqtr4d |
|
30 |
|
fveq2 |
|
31 |
|
id |
|
32 |
30 31
|
eqeq12d |
|
33 |
29 32
|
syl5ibcom |
|
34 |
33
|
rexlimiv |
|
35 |
7 34
|
sylbi |
|
36 |
1 2
|
mstaval |
|
37 |
35 36
|
eleq2s |
|