Step |
Hyp |
Ref |
Expression |
1 |
|
negsproplem.1 |
|
2 |
|
negsproplem1.1 |
|
3 |
|
negsproplem1.2 |
|
4 |
|
negsproplem1.3 |
|
5 |
2 3
|
jca |
|
6 |
|
fveq2 |
|
7 |
6
|
uneq1d |
|
8 |
7
|
eleq1d |
|
9 |
|
fveq2 |
|
10 |
9
|
eleq1d |
|
11 |
|
breq1 |
|
12 |
9
|
breq2d |
|
13 |
11 12
|
imbi12d |
|
14 |
10 13
|
anbi12d |
|
15 |
8 14
|
imbi12d |
|
16 |
|
fveq2 |
|
17 |
16
|
uneq2d |
|
18 |
17
|
eleq1d |
|
19 |
|
breq2 |
|
20 |
|
fveq2 |
|
21 |
20
|
breq1d |
|
22 |
19 21
|
imbi12d |
|
23 |
22
|
anbi2d |
|
24 |
18 23
|
imbi12d |
|
25 |
15 24
|
rspc2v |
|
26 |
5 1 4 25
|
syl3c |
|