Step |
Hyp |
Ref |
Expression |
1 |
|
elfvdm |
|
2 |
|
madef |
|
3 |
2
|
fdmi |
|
4 |
1 3
|
eleqtrdi |
|
5 |
|
fveq2 |
|
6 |
|
sseq2 |
|
7 |
5 6
|
raleqbidv |
|
8 |
|
fveq2 |
|
9 |
8
|
sseq1d |
|
10 |
9
|
cbvralvw |
|
11 |
7 10
|
bitrdi |
|
12 |
|
fveq2 |
|
13 |
|
sseq2 |
|
14 |
12 13
|
raleqbidv |
|
15 |
|
elmade2 |
|
16 |
15
|
adantr |
|
17 |
|
elpwi |
|
18 |
|
elpwi |
|
19 |
17 18
|
anim12i |
|
20 |
|
unss |
|
21 |
19 20
|
sylib |
|
22 |
|
simpr |
|
23 |
|
simplll |
|
24 |
|
dfss3 |
|
25 |
|
fveq2 |
|
26 |
25
|
sseq1d |
|
27 |
26
|
rspccv |
|
28 |
27
|
ralimi |
|
29 |
|
rexim |
|
30 |
28 29
|
syl |
|
31 |
30
|
adantl |
|
32 |
|
elold |
|
33 |
32
|
adantr |
|
34 |
|
bdayelon |
|
35 |
|
onelssex |
|
36 |
34 35
|
mpan |
|
37 |
36
|
adantr |
|
38 |
31 33 37
|
3imtr4d |
|
39 |
38
|
ralimdv |
|
40 |
24 39
|
syl5bi |
|
41 |
40
|
imp |
|
42 |
41
|
adantr |
|
43 |
|
bdayfun |
|
44 |
|
oldssno |
|
45 |
|
sstr |
|
46 |
44 45
|
mpan2 |
|
47 |
|
bdaydm |
|
48 |
46 47
|
sseqtrrdi |
|
49 |
|
funimass4 |
|
50 |
43 48 49
|
sylancr |
|
51 |
50
|
adantl |
|
52 |
51
|
adantr |
|
53 |
42 52
|
mpbird |
|
54 |
|
scutbdaybnd |
|
55 |
22 23 53 54
|
syl3anc |
|
56 |
|
fveq2 |
|
57 |
56
|
sseq1d |
|
58 |
55 57
|
syl5ibcom |
|
59 |
58
|
expimpd |
|
60 |
59
|
ex |
|
61 |
21 60
|
syl5 |
|
62 |
61
|
rexlimdvv |
|
63 |
16 62
|
sylbid |
|
64 |
63
|
ralrimiv |
|
65 |
64
|
ex |
|
66 |
11 14 65
|
tfis3 |
|
67 |
|
fveq2 |
|
68 |
67
|
sseq1d |
|
69 |
68
|
rspccv |
|
70 |
66 69
|
syl |
|
71 |
4 70
|
mpcom |
|