Step |
Hyp |
Ref |
Expression |
1 |
|
fveq2 |
|
2 |
1
|
sseq1d |
|
3 |
2
|
imbi2d |
|
4 |
|
fveq2 |
|
5 |
4
|
sseq1d |
|
6 |
5
|
imbi2d |
|
7 |
|
fveq2 |
|
8 |
7
|
sseq1d |
|
9 |
8
|
imbi2d |
|
10 |
|
fveq2 |
|
11 |
10
|
sseq1d |
|
12 |
11
|
imbi2d |
|
13 |
|
ssid |
|
14 |
13
|
2a1i |
|
15 |
|
simprl |
|
16 |
|
recnprss |
|
17 |
16
|
ad2antrr |
|
18 |
17
|
adantr |
|
19 |
|
simplll |
|
20 |
|
eluznn0 |
|
21 |
20
|
adantll |
|
22 |
21
|
adantr |
|
23 |
|
dvnf |
|
24 |
19 15 22 23
|
syl3anc |
|
25 |
|
dvnbss |
|
26 |
19 15 22 25
|
syl3anc |
|
27 |
|
dvnp1 |
|
28 |
18 15 22 27
|
syl3anc |
|
29 |
|
simprr |
|
30 |
28 29
|
eqeltrrd |
|
31 |
|
cncff |
|
32 |
30 31
|
syl |
|
33 |
32
|
fdmd |
|
34 |
|
cnex |
|
35 |
|
elpm2g |
|
36 |
34 19 35
|
sylancr |
|
37 |
15 36
|
mpbid |
|
38 |
37
|
simprd |
|
39 |
26 38
|
sstrd |
|
40 |
18 24 39
|
dvbss |
|
41 |
33 40
|
eqsstrrd |
|
42 |
26 41
|
eqssd |
|
43 |
42
|
feq2d |
|
44 |
24 43
|
mpbid |
|
45 |
|
dvcn |
|
46 |
18 44 38 33 45
|
syl31anc |
|
47 |
15 46
|
jca |
|
48 |
47
|
ex |
|
49 |
|
peano2nn0 |
|
50 |
21 49
|
syl |
|
51 |
|
elcpn |
|
52 |
17 50 51
|
syl2anc |
|
53 |
|
elcpn |
|
54 |
17 21 53
|
syl2anc |
|
55 |
48 52 54
|
3imtr4d |
|
56 |
55
|
ssrdv |
|
57 |
|
sstr2 |
|
58 |
56 57
|
syl |
|
59 |
58
|
expcom |
|
60 |
59
|
a2d |
|
61 |
3 6 9 12 14 60
|
uzind4 |
|
62 |
61
|
com12 |
|
63 |
62
|
3impia |
|