Step |
Hyp |
Ref |
Expression |
1 |
|
simpl |
|
2 |
|
simpr |
|
3 |
2
|
fveq2d |
|
4 |
1 3
|
ineq12d |
|
5 |
4
|
eqeq1d |
|
6 |
1
|
fveq2d |
|
7 |
6 2
|
ineq12d |
|
8 |
7
|
eqeq1d |
|
9 |
5 8
|
anbi12d |
|
10 |
1
|
sseq1d |
|
11 |
2
|
sseq1d |
|
12 |
10 11
|
3anbi12d |
|
13 |
12
|
2rexbidv |
|
14 |
|
iscnrm3llem1 |
|
15 |
|
simp1 |
|
16 |
|
eqidd |
|
17 |
|
simp21 |
|
18 |
17
|
elpwid |
|
19 |
|
eqidd |
|
20 |
|
simp22 |
|
21 |
|
simp3 |
|
22 |
|
simp23 |
|
23 |
15 16 18 19 20 21 22
|
restclssep |
|
24 |
|
iscnrm3llem2 |
|
25 |
23 24
|
embantd |
|
26 |
9 13 14 25
|
iscnrm3lem5 |
|