Step |
Hyp |
Ref |
Expression |
1 |
|
islmodfg.b |
|
2 |
|
islmodfg.n |
|
3 |
|
df-lfig |
|
4 |
3
|
eleq2i |
|
5 |
|
fveq2 |
|
6 |
|
fveq2 |
|
7 |
6 2
|
eqtr4di |
|
8 |
5
|
pweqd |
|
9 |
8
|
ineq1d |
|
10 |
7 9
|
imaeq12d |
|
11 |
5 10
|
eleq12d |
|
12 |
11
|
elrab3 |
|
13 |
4 12
|
syl5bb |
|
14 |
|
eqid |
|
15 |
|
eqid |
|
16 |
14 15 2
|
lspf |
|
17 |
16
|
ffnd |
|
18 |
|
inss1 |
|
19 |
|
fvelimab |
|
20 |
17 18 19
|
sylancl |
|
21 |
|
elin |
|
22 |
1
|
eqcomi |
|
23 |
22
|
pweqi |
|
24 |
23
|
eleq2i |
|
25 |
24
|
anbi1i |
|
26 |
21 25
|
bitri |
|
27 |
22
|
eqeq2i |
|
28 |
26 27
|
anbi12i |
|
29 |
|
anass |
|
30 |
28 29
|
bitri |
|
31 |
30
|
rexbii2 |
|
32 |
20 31
|
syl6bb |
|
33 |
13 32
|
bitrd |
|