Step |
Hyp |
Ref |
Expression |
1 |
|
nosupbday.1 |
|
2 |
1
|
nosupno |
|
3 |
2
|
adantr |
|
4 |
|
bdayval |
|
5 |
3 4
|
syl |
|
6 |
|
iftrue |
|
7 |
1 6
|
syl5eq |
|
8 |
7
|
dmeqd |
|
9 |
|
2oex |
|
10 |
9
|
dmsnop |
|
11 |
10
|
uneq2i |
|
12 |
|
dmun |
|
13 |
|
df-suc |
|
14 |
11 12 13
|
3eqtr4i |
|
15 |
8 14
|
eqtrdi |
|
16 |
15
|
adantr |
|
17 |
|
simprrl |
|
18 |
|
eloni |
|
19 |
17 18
|
syl |
|
20 |
|
simprll |
|
21 |
|
simpl |
|
22 |
|
nomaxmo |
|
23 |
22
|
adantr |
|
24 |
23
|
adantl |
|
25 |
|
reu5 |
|
26 |
21 24 25
|
sylanbrc |
|
27 |
26
|
adantrr |
|
28 |
|
riotacl |
|
29 |
27 28
|
syl |
|
30 |
20 29
|
sseldd |
|
31 |
|
bdayval |
|
32 |
30 31
|
syl |
|
33 |
|
simprrr |
|
34 |
|
bdayfo |
|
35 |
|
fofn |
|
36 |
34 35
|
ax-mp |
|
37 |
|
fnfvima |
|
38 |
36 20 29 37
|
mp3an2i |
|
39 |
33 38
|
sseldd |
|
40 |
32 39
|
eqeltrrd |
|
41 |
|
ordsucss |
|
42 |
19 40 41
|
sylc |
|
43 |
16 42
|
eqsstrd |
|
44 |
|
iffalse |
|
45 |
1 44
|
syl5eq |
|
46 |
45
|
dmeqd |
|
47 |
|
iotaex |
|
48 |
|
eqid |
|
49 |
47 48
|
dmmpti |
|
50 |
46 49
|
eqtrdi |
|
51 |
50
|
adantr |
|
52 |
|
simplrl |
|
53 |
|
ssel2 |
|
54 |
53
|
ad4ant14 |
|
55 |
|
bdayval |
|
56 |
54 55
|
syl |
|
57 |
|
simplrr |
|
58 |
|
fnfvima |
|
59 |
36 58
|
mp3an1 |
|
60 |
59
|
ad4ant14 |
|
61 |
57 60
|
sseldd |
|
62 |
56 61
|
eqeltrrd |
|
63 |
|
onelss |
|
64 |
52 62 63
|
sylc |
|
65 |
64
|
sseld |
|
66 |
65
|
adantrd |
|
67 |
66
|
rexlimdva |
|
68 |
67
|
abssdv |
|
69 |
68
|
adantl |
|
70 |
51 69
|
eqsstrd |
|
71 |
43 70
|
pm2.61ian |
|
72 |
5 71
|
eqsstrd |
|