Step |
Hyp |
Ref |
Expression |
1 |
|
elfz2nn0 |
|
2 |
|
nn0addcl |
|
3 |
2
|
nn0zd |
|
4 |
3
|
3adant3 |
|
5 |
1 4
|
sylbi |
|
6 |
|
elfzelz |
|
7 |
|
zsubcl |
|
8 |
5 6 7
|
syl2anr |
|
9 |
8
|
3adant3 |
|
10 |
6
|
zred |
|
11 |
10
|
adantr |
|
12 |
|
elfzel2 |
|
13 |
12
|
zred |
|
14 |
13
|
adantr |
|
15 |
|
nn0readdcl |
|
16 |
15
|
3adant3 |
|
17 |
1 16
|
sylbi |
|
18 |
17
|
adantl |
|
19 |
|
elfzle2 |
|
20 |
|
elfzle1 |
|
21 |
|
nn0re |
|
22 |
|
nn0re |
|
23 |
21 22
|
anim12ci |
|
24 |
23
|
3adant3 |
|
25 |
1 24
|
sylbi |
|
26 |
|
addge02 |
|
27 |
25 26
|
syl |
|
28 |
20 27
|
mpbid |
|
29 |
19 28
|
anim12i |
|
30 |
|
letr |
|
31 |
30
|
imp |
|
32 |
11 14 18 29 31
|
syl31anc |
|
33 |
32
|
3adant3 |
|
34 |
|
zre |
|
35 |
21 22
|
anim12i |
|
36 |
35
|
3adant3 |
|
37 |
1 36
|
sylbi |
|
38 |
|
readdcl |
|
39 |
37 38
|
syl |
|
40 |
34 39
|
anim12ci |
|
41 |
6 40
|
sylan |
|
42 |
41
|
3adant3 |
|
43 |
|
subge0 |
|
44 |
42 43
|
syl |
|
45 |
33 44
|
mpbird |
|
46 |
|
elnn0z |
|
47 |
9 45 46
|
sylanbrc |
|
48 |
|
elfz3nn0 |
|
49 |
48
|
3ad2ant1 |
|
50 |
|
elfzelz |
|
51 |
|
zre |
|
52 |
|
ltnle |
|
53 |
52
|
ancoms |
|
54 |
|
ltle |
|
55 |
54
|
ancoms |
|
56 |
53 55
|
sylbird |
|
57 |
34 51 56
|
syl2an |
|
58 |
6 50 57
|
syl2an |
|
59 |
58
|
3impia |
|
60 |
50
|
zred |
|
61 |
60
|
adantl |
|
62 |
61 11 14
|
leadd1d |
|
63 |
62
|
3adant3 |
|
64 |
59 63
|
mpbid |
|
65 |
18 11 14
|
lesubadd2d |
|
66 |
65
|
3adant3 |
|
67 |
64 66
|
mpbird |
|
68 |
|
elfz2nn0 |
|
69 |
47 49 67 68
|
syl3anbrc |
|