Step |
Hyp |
Ref |
Expression |
1 |
|
mdetfval1.d |
|
2 |
|
mdetfval1.a |
|
3 |
|
mdetfval1.b |
|
4 |
|
mdetfval1.p |
|
5 |
|
mdetfval1.y |
|
6 |
|
mdetfval1.s |
|
7 |
|
mdetfval1.t |
|
8 |
|
mdetfval1.u |
|
9 |
1 2 3 4 5 6 7 8
|
mdetfval |
|
10 |
4 6
|
cofipsgn |
|
11 |
10
|
oveq1d |
|
12 |
11
|
mpteq2dva |
|
13 |
12
|
oveq2d |
|
14 |
13
|
mpteq2dv |
|
15 |
9 14
|
syl5eq |
|
16 |
|
df-nel |
|
17 |
1
|
nfimdetndef |
|
18 |
2
|
fveq2i |
|
19 |
3 18
|
eqtri |
|
20 |
16
|
biimpi |
|
21 |
20
|
intnanrd |
|
22 |
|
matbas0 |
|
23 |
21 22
|
syl |
|
24 |
19 23
|
syl5eq |
|
25 |
24
|
mpteq1d |
|
26 |
|
mpt0 |
|
27 |
25 26
|
eqtrdi |
|
28 |
17 27
|
eqtr4d |
|
29 |
16 28
|
sylbir |
|
30 |
15 29
|
pm2.61i |
|