Step |
Hyp |
Ref |
Expression |
1 |
|
negsproplem.1 |
|
2 |
|
negsproplem4.1 |
|
3 |
|
negsproplem4.2 |
|
4 |
|
negsproplem4.3 |
|
5 |
|
negsproplem5.4 |
|
6 |
1 2
|
negsproplem3 |
|
7 |
6
|
simp2d |
|
8 |
|
negsfn |
|
9 |
|
rightssno |
|
10 |
|
bdayelon |
|
11 |
|
oldbday |
|
12 |
10 3 11
|
sylancr |
|
13 |
5 12
|
mpbird |
|
14 |
|
breq2 |
|
15 |
|
rightval |
|
16 |
14 15
|
elrab2 |
|
17 |
13 4 16
|
sylanbrc |
|
18 |
|
fnfvima |
|
19 |
8 9 17 18
|
mp3an12i |
|
20 |
|
fvex |
|
21 |
20
|
snid |
|
22 |
21
|
a1i |
|
23 |
7 19 22
|
ssltsepcd |
|