Step |
Hyp |
Ref |
Expression |
1 |
|
elfzo0 |
|
2 |
|
elfzo0 |
|
3 |
|
nn0re |
|
4 |
3
|
adantr |
|
5 |
|
nnre |
|
6 |
|
nn0re |
|
7 |
|
resubcl |
|
8 |
5 6 7
|
syl2an |
|
9 |
8
|
ancoms |
|
10 |
9
|
3adant3 |
|
11 |
4 10
|
anim12i |
|
12 |
|
nn0ge0 |
|
13 |
12
|
adantr |
|
14 |
|
posdif |
|
15 |
6 5 14
|
syl2an |
|
16 |
15
|
biimp3a |
|
17 |
13 16
|
anim12i |
|
18 |
|
addgegt0 |
|
19 |
11 17 18
|
syl2anc |
|
20 |
|
nn0cn |
|
21 |
20
|
adantr |
|
22 |
21
|
adantr |
|
23 |
|
nn0cn |
|
24 |
23
|
3ad2ant1 |
|
25 |
24
|
adantl |
|
26 |
|
nncn |
|
27 |
26
|
3ad2ant2 |
|
28 |
27
|
adantl |
|
29 |
22 25 28
|
subadd23d |
|
30 |
19 29
|
breqtrrd |
|
31 |
6
|
3ad2ant1 |
|
32 |
|
resubcl |
|
33 |
4 31 32
|
syl2an |
|
34 |
5
|
3ad2ant2 |
|
35 |
34
|
adantl |
|
36 |
33 35
|
possumd |
|
37 |
30 36
|
mpbid |
|
38 |
3
|
adantr |
|
39 |
34
|
adantl |
|
40 |
|
readdcl |
|
41 |
6 5 40
|
syl2an |
|
42 |
41
|
3adant3 |
|
43 |
42
|
adantl |
|
44 |
38 39 43
|
3jca |
|
45 |
|
nn0ge0 |
|
46 |
45
|
3ad2ant1 |
|
47 |
46
|
adantl |
|
48 |
5 6
|
anim12i |
|
49 |
48
|
ancoms |
|
50 |
49
|
3adant3 |
|
51 |
50
|
adantl |
|
52 |
|
addge02 |
|
53 |
51 52
|
syl |
|
54 |
47 53
|
mpbid |
|
55 |
44 54
|
lelttrdi |
|
56 |
55
|
impancom |
|
57 |
56
|
imp |
|
58 |
4
|
adantr |
|
59 |
31
|
adantl |
|
60 |
58 59 35
|
ltsubadd2d |
|
61 |
57 60
|
mpbird |
|
62 |
37 61
|
jca |
|
63 |
62
|
ex |
|
64 |
2 63
|
syl5bi |
|
65 |
64
|
3adant2 |
|
66 |
1 65
|
sylbi |
|
67 |
66
|
imp |
|