Step |
Hyp |
Ref |
Expression |
1 |
|
lfuhgr.1 |
|
2 |
|
lfuhgr.2 |
|
3 |
|
edgval |
|
4 |
2
|
rneqi |
|
5 |
3 4
|
eqtr4i |
|
6 |
5
|
sseq1i |
|
7 |
2
|
uhgrfun |
|
8 |
|
fdmrn |
|
9 |
|
fss |
|
10 |
9
|
ex |
|
11 |
8 10
|
sylbi |
|
12 |
7 11
|
syl |
|
13 |
|
frn |
|
14 |
12 13
|
impbid1 |
|
15 |
6 14
|
syl5bb |
|
16 |
|
uhgredgss |
|
17 |
16
|
difss2d |
|
18 |
1
|
pweqi |
|
19 |
17 18
|
sseqtrrdi |
|
20 |
|
ssrab |
|
21 |
20
|
baib |
|
22 |
19 21
|
syl |
|
23 |
15 22
|
bitr3d |
|