| 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
|
biimtrid |
|
| 64 |
63
|
3exp |
|
| 65 |
64
|
com34 |
|
| 66 |
65
|
3imp1 |
|