Step |
Hyp |
Ref |
Expression |
1 |
|
xrsds.d |
|
2 |
|
necom |
|
3 |
|
xrleltne |
|
4 |
|
mnfxr |
|
5 |
4
|
a1i |
|
6 |
|
simpl1 |
|
7 |
|
simpl2 |
|
8 |
|
pnfnre |
|
9 |
8
|
neli |
|
10 |
|
mnfle |
|
11 |
6 10
|
syl |
|
12 |
|
simpl3 |
|
13 |
5 6 7 11 12
|
xrlelttrd |
|
14 |
|
xrltne |
|
15 |
5 7 13 14
|
syl3anc |
|
16 |
|
xaddpnf1 |
|
17 |
7 15 16
|
syl2anc |
|
18 |
17
|
eleq1d |
|
19 |
9 18
|
mtbiri |
|
20 |
|
ngtmnft |
|
21 |
6 20
|
syl |
|
22 |
|
simpr |
|
23 |
|
xnegeq |
|
24 |
|
xnegmnf |
|
25 |
23 24
|
eqtrdi |
|
26 |
25
|
oveq2d |
|
27 |
26
|
eleq1d |
|
28 |
22 27
|
syl5ibcom |
|
29 |
21 28
|
sylbird |
|
30 |
19 29
|
mt3d |
|
31 |
|
xrre2 |
|
32 |
5 6 7 30 12 31
|
syl32anc |
|
33 |
|
pnfxr |
|
34 |
33
|
a1i |
|
35 |
6
|
xnegcld |
|
36 |
|
xnegpnf |
|
37 |
|
pnfge |
|
38 |
7 37
|
syl |
|
39 |
6 7 34 12 38
|
xrltletrd |
|
40 |
|
xltnegi |
|
41 |
6 34 39 40
|
syl3anc |
|
42 |
36 41
|
eqbrtrrid |
|
43 |
|
xrltne |
|
44 |
5 35 42 43
|
syl3anc |
|
45 |
|
xaddpnf2 |
|
46 |
35 44 45
|
syl2anc |
|
47 |
46
|
eleq1d |
|
48 |
9 47
|
mtbiri |
|
49 |
|
nltpnft |
|
50 |
7 49
|
syl |
|
51 |
|
oveq1 |
|
52 |
51
|
eleq1d |
|
53 |
22 52
|
syl5ibcom |
|
54 |
50 53
|
sylbird |
|
55 |
48 54
|
mt3d |
|
56 |
|
xrre2 |
|
57 |
6 7 34 12 55 56
|
syl32anc |
|
58 |
32 57
|
jca |
|
59 |
58
|
ex |
|
60 |
59
|
3expia |
|
61 |
60
|
3adant3 |
|
62 |
3 61
|
sylbird |
|
63 |
2 62
|
syl5bi |
|
64 |
63
|
3exp |
|
65 |
64
|
com34 |
|
66 |
65
|
3imp1 |
|