Step |
Hyp |
Ref |
Expression |
1 |
|
isssp.g |
|
2 |
|
isssp.f |
|
3 |
|
isssp.s |
|
4 |
|
isssp.r |
|
5 |
|
isssp.n |
|
6 |
|
isssp.m |
|
7 |
|
isssp.h |
|
8 |
1 3 5 7
|
sspval |
|
9 |
8
|
eleq2d |
|
10 |
|
fveq2 |
|
11 |
10 2
|
eqtr4di |
|
12 |
11
|
sseq1d |
|
13 |
|
fveq2 |
|
14 |
13 4
|
eqtr4di |
|
15 |
14
|
sseq1d |
|
16 |
|
fveq2 |
|
17 |
16 6
|
eqtr4di |
|
18 |
17
|
sseq1d |
|
19 |
12 15 18
|
3anbi123d |
|
20 |
19
|
elrab |
|
21 |
9 20
|
syl6bb |
|