Step |
Hyp |
Ref |
Expression |
1 |
|
nmfnval |
|
2 |
1
|
adantr |
|
3 |
2
|
breq1d |
|
4 |
|
nmfnsetre |
|
5 |
|
ressxr |
|
6 |
4 5
|
sstrdi |
|
7 |
|
supxrleub |
|
8 |
6 7
|
sylan |
|
9 |
|
ancom |
|
10 |
|
eqeq1 |
|
11 |
10
|
anbi1d |
|
12 |
9 11
|
syl5bb |
|
13 |
12
|
rexbidv |
|
14 |
13
|
ralab |
|
15 |
|
ralcom4 |
|
16 |
|
impexp |
|
17 |
16
|
albii |
|
18 |
|
fvex |
|
19 |
|
breq1 |
|
20 |
19
|
imbi2d |
|
21 |
18 20
|
ceqsalv |
|
22 |
17 21
|
bitri |
|
23 |
22
|
ralbii |
|
24 |
|
r19.23v |
|
25 |
24
|
albii |
|
26 |
15 23 25
|
3bitr3i |
|
27 |
14 26
|
bitr4i |
|
28 |
8 27
|
syl6bb |
|
29 |
3 28
|
bitrd |
|