Step |
Hyp |
Ref |
Expression |
1 |
|
isubgredg.v |
|
2 |
|
isubgredg.e |
|
3 |
|
isubgredg.h |
|
4 |
|
isubgredg.i |
|
5 |
3
|
fveq2i |
|
6 |
|
eqid |
|
7 |
1 6
|
isubgriedg |
|
8 |
5 7
|
eqtrid |
|
9 |
8
|
rneqd |
|
10 |
|
resss |
|
11 |
|
rnss |
|
12 |
10 11
|
mp1i |
|
13 |
9 12
|
eqsstrd |
|
14 |
|
edgval |
|
15 |
4 14
|
eqtri |
|
16 |
|
edgval |
|
17 |
2 16
|
eqtri |
|
18 |
13 15 17
|
3sstr4g |
|