Step |
Hyp |
Ref |
Expression |
1 |
|
mstapst.p |
|
2 |
|
mstapst.s |
|
3 |
|
elmsta.v |
|
4 |
|
elmsta.z |
|
5 |
1 2
|
mstapst |
|
6 |
5
|
sseli |
|
7 |
|
eqid |
|
8 |
3 1 7 4
|
msrval |
|
9 |
6 8
|
syl |
|
10 |
7 2
|
msrid |
|
11 |
9 10
|
eqtr3d |
|
12 |
11
|
fveq2d |
|
13 |
12
|
fveq2d |
|
14 |
|
inss1 |
|
15 |
1
|
mpstrcl |
|
16 |
6 15
|
syl |
|
17 |
16
|
simp1d |
|
18 |
|
ssexg |
|
19 |
14 17 18
|
sylancr |
|
20 |
16
|
simp2d |
|
21 |
16
|
simp3d |
|
22 |
|
ot1stg |
|
23 |
19 20 21 22
|
syl3anc |
|
24 |
|
ot1stg |
|
25 |
16 24
|
syl |
|
26 |
13 23 25
|
3eqtr3d |
|
27 |
|
inss2 |
|
28 |
26 27
|
eqsstrrdi |
|
29 |
6 28
|
jca |
|
30 |
8
|
adantr |
|
31 |
|
simpr |
|
32 |
|
df-ss |
|
33 |
31 32
|
sylib |
|
34 |
33
|
oteq1d |
|
35 |
30 34
|
eqtrd |
|
36 |
1 7
|
msrf |
|
37 |
|
ffn |
|
38 |
36 37
|
ax-mp |
|
39 |
|
simpl |
|
40 |
|
fnfvelrn |
|
41 |
38 39 40
|
sylancr |
|
42 |
35 41
|
eqeltrrd |
|
43 |
7 2
|
mstaval |
|
44 |
42 43
|
eleqtrrdi |
|
45 |
29 44
|
impbii |
|