Step |
Hyp |
Ref |
Expression |
1 |
|
fusgrmaxsize.v |
|
2 |
|
fusgrmaxsize.e |
|
3 |
|
usgrsscusgra.h |
|
4 |
|
usgrsscusgra.f |
|
5 |
1 2
|
usgredg |
|
6 |
3 4
|
iscusgredg |
|
7 |
|
sneq |
|
8 |
7
|
difeq2d |
|
9 |
|
preq2 |
|
10 |
9
|
eleq1d |
|
11 |
8 10
|
raleqbidv |
|
12 |
11
|
rspcv |
|
13 |
|
simpl |
|
14 |
13
|
necomd |
|
15 |
14
|
anim2i |
|
16 |
|
eldifsn |
|
17 |
15 16
|
sylibr |
|
18 |
|
preq1 |
|
19 |
18
|
eleq1d |
|
20 |
19
|
rspcv |
|
21 |
17 20
|
syl |
|
22 |
|
prcom |
|
23 |
22
|
eqeq2i |
|
24 |
|
eqcom |
|
25 |
23 24
|
sylbb |
|
26 |
25
|
eleq1d |
|
27 |
26
|
biimpd |
|
28 |
27
|
ad2antll |
|
29 |
21 28
|
syld |
|
30 |
12 29
|
syl9 |
|
31 |
30
|
impl |
|
32 |
31
|
adantld |
|
33 |
6 32
|
syl5bi |
|
34 |
33
|
ex |
|
35 |
34
|
rexlimivv |
|
36 |
5 35
|
syl |
|
37 |
36
|
impancom |
|
38 |
37
|
ssrdv |
|