Step |
Hyp |
Ref |
Expression |
1 |
|
pwfseqlem4.g |
|
2 |
|
pwfseqlem4.x |
|
3 |
|
pwfseqlem4.h |
|
4 |
|
pwfseqlem4.ps |
|
5 |
|
pwfseqlem4.k |
|
6 |
|
pwfseqlem4.d |
|
7 |
1
|
adantr |
|
8 |
|
f1f |
|
9 |
7 8
|
syl |
|
10 |
|
ssrab2 |
|
11 |
|
simprl1 |
|
12 |
4 11
|
sylan2b |
|
13 |
10 12
|
sstrid |
|
14 |
|
vex |
|
15 |
14
|
rabex |
|
16 |
15
|
elpw |
|
17 |
13 16
|
sylibr |
|
18 |
9 17
|
ffvelrnd |
|
19 |
6 18
|
eqeltrid |
|
20 |
|
pm5.19 |
|
21 |
5
|
adantr |
|
22 |
|
f1f |
|
23 |
21 22
|
syl |
|
24 |
|
ffvelrn |
|
25 |
23 24
|
sylancom |
|
26 |
|
f1f1orn |
|
27 |
21 26
|
syl |
|
28 |
|
f1ocnvfv1 |
|
29 |
27 28
|
sylancom |
|
30 |
|
f1fn |
|
31 |
7 30
|
syl |
|
32 |
|
fnfvelrn |
|
33 |
31 17 32
|
syl2anc |
|
34 |
6 33
|
eqeltrid |
|
35 |
34
|
adantr |
|
36 |
29 35
|
eqeltrd |
|
37 |
|
fveq2 |
|
38 |
37
|
eleq1d |
|
39 |
|
id |
|
40 |
|
2fveq3 |
|
41 |
39 40
|
eleq12d |
|
42 |
41
|
notbid |
|
43 |
38 42
|
anbi12d |
|
44 |
|
fveq2 |
|
45 |
44
|
eleq1d |
|
46 |
|
id |
|
47 |
|
2fveq3 |
|
48 |
46 47
|
eleq12d |
|
49 |
48
|
notbid |
|
50 |
45 49
|
anbi12d |
|
51 |
50
|
cbvrabv |
|
52 |
43 51
|
elrab2 |
|
53 |
|
anass |
|
54 |
52 53
|
bitr4i |
|
55 |
54
|
baib |
|
56 |
25 36 55
|
syl2anc |
|
57 |
29 6
|
eqtrdi |
|
58 |
57
|
fveq2d |
|
59 |
|
f1f1orn |
|
60 |
7 59
|
syl |
|
61 |
|
f1ocnvfv1 |
|
62 |
60 17 61
|
syl2anc |
|
63 |
62
|
adantr |
|
64 |
58 63
|
eqtrd |
|
65 |
64
|
eleq2d |
|
66 |
65
|
notbid |
|
67 |
56 66
|
bitrd |
|
68 |
67
|
ex |
|
69 |
20 68
|
mtoi |
|
70 |
19 69
|
eldifd |
|