Step |
Hyp |
Ref |
Expression |
1 |
|
2re |
|
2 |
|
1nn |
|
3 |
|
3nn0 |
|
4 |
|
2nn0 |
|
5 |
|
2lt10 |
|
6 |
2 3 4 5
|
declti |
|
7 |
1 6
|
ltneii |
|
8 |
|
plusgndx |
|
9 |
|
unifndx |
|
10 |
8 9
|
neeq12i |
|
11 |
7 10
|
mpbir |
|
12 |
|
3re |
|
13 |
|
3lt10 |
|
14 |
2 3 3 13
|
declti |
|
15 |
12 14
|
ltneii |
|
16 |
|
mulrndx |
|
17 |
16 9
|
neeq12i |
|
18 |
15 17
|
mpbir |
|
19 |
|
4re |
|
20 |
|
4nn0 |
|
21 |
|
4lt10 |
|
22 |
2 3 20 21
|
declti |
|
23 |
19 22
|
ltneii |
|
24 |
|
starvndx |
|
25 |
24 9
|
neeq12i |
|
26 |
23 25
|
mpbir |
|
27 |
11 18 26
|
3pm3.2i |
|
28 |
|
10re |
|
29 |
|
1nn0 |
|
30 |
|
0nn0 |
|
31 |
|
3nn |
|
32 |
|
3pos |
|
33 |
29 30 31 32
|
declt |
|
34 |
28 33
|
ltneii |
|
35 |
|
plendx |
|
36 |
35 9
|
neeq12i |
|
37 |
34 36
|
mpbir |
|
38 |
|
2nn |
|
39 |
29 38
|
decnncl |
|
40 |
39
|
nnrei |
|
41 |
|
2lt3 |
|
42 |
29 4 31 41
|
declt |
|
43 |
40 42
|
ltneii |
|
44 |
|
dsndx |
|
45 |
44 9
|
neeq12i |
|
46 |
43 45
|
mpbir |
|
47 |
37 46
|
pm3.2i |
|
48 |
27 47
|
pm3.2i |
|