Step |
Hyp |
Ref |
Expression |
1 |
|
dfac5lem.1 |
|
2 |
|
dfac5lem.2 |
|
3 |
|
dfac5lem.3 |
|
4 |
1 2 3
|
dfac5lem4 |
|
5 |
|
simpr |
|
6 |
5
|
a1i |
|
7 |
|
ineq1 |
|
8 |
7
|
eleq2d |
|
9 |
8
|
eubidv |
|
10 |
9
|
rspccv |
|
11 |
1
|
dfac5lem3 |
|
12 |
|
dfac5lem1 |
|
13 |
10 11 12
|
3imtr3g |
|
14 |
6 13
|
jcad |
|
15 |
2
|
eleq2i |
|
16 |
|
elin |
|
17 |
1
|
dfac5lem2 |
|
18 |
17
|
anbi1i |
|
19 |
|
anass |
|
20 |
18 19
|
bitri |
|
21 |
15 16 20
|
3bitri |
|
22 |
21
|
eubii |
|
23 |
|
euanv |
|
24 |
22 23
|
bitr2i |
|
25 |
14 24
|
syl6ib |
|
26 |
|
euex |
|
27 |
|
nfeu1 |
|
28 |
|
nfv |
|
29 |
27 28
|
nfim |
|
30 |
21
|
simprbi |
|
31 |
30
|
simpld |
|
32 |
|
tz6.12 |
|
33 |
32
|
eleq1d |
|
34 |
33
|
biimparc |
|
35 |
34
|
exp32 |
|
36 |
31 35
|
mpcom |
|
37 |
29 36
|
exlimi |
|
38 |
26 37
|
mpcom |
|
39 |
25 38
|
syl6 |
|
40 |
39
|
expcomd |
|
41 |
40
|
ralrimiv |
|
42 |
|
vex |
|
43 |
42
|
inex2 |
|
44 |
2 43
|
eqeltri |
|
45 |
|
fveq1 |
|
46 |
45
|
eleq1d |
|
47 |
46
|
imbi2d |
|
48 |
47
|
ralbidv |
|
49 |
44 48
|
spcev |
|
50 |
41 49
|
syl |
|
51 |
50
|
exlimiv |
|
52 |
4 51
|
syl |
|