Step |
Hyp |
Ref |
Expression |
1 |
|
usgrexmpl.v |
|
2 |
|
usgrexmpl.e |
|
3 |
|
usgrexmpl.g |
|
4 |
|
edgval |
|
5 |
1 2 3
|
usgrexmpllem |
|
6 |
5
|
simpri |
|
7 |
6
|
rneqi |
|
8 |
|
prex |
|
9 |
|
prex |
|
10 |
8 9
|
pm3.2i |
|
11 |
|
prex |
|
12 |
|
prex |
|
13 |
11 12
|
pm3.2i |
|
14 |
10 13
|
pm3.2i |
|
15 |
|
usgrexmpldifpr |
|
16 |
14 15
|
pm3.2i |
|
17 |
16 2
|
pm3.2i |
|
18 |
|
s4f1o |
|
19 |
18
|
imp31 |
|
20 |
|
dff1o5 |
|
21 |
20
|
simprbi |
|
22 |
17 19 21
|
mp2b |
|
23 |
4 7 22
|
3eqtri |
|