| Step |
Hyp |
Ref |
Expression |
| 1 |
|
lngndx |
|
| 2 |
|
1re |
|
| 3 |
|
1nn |
|
| 4 |
|
7nn0 |
|
| 5 |
|
1nn0 |
|
| 6 |
|
1lt10 |
|
| 7 |
3 4 5 6
|
declti |
|
| 8 |
2 7
|
gtneii |
|
| 9 |
|
basendx |
|
| 10 |
8 9
|
neeqtrri |
|
| 11 |
1 10
|
eqnetri |
|
| 12 |
|
2re |
|
| 13 |
|
2nn0 |
|
| 14 |
|
2lt10 |
|
| 15 |
3 4 13 14
|
declti |
|
| 16 |
12 15
|
gtneii |
|
| 17 |
|
plusgndx |
|
| 18 |
16 17
|
neeqtrri |
|
| 19 |
1 18
|
eqnetri |
|
| 20 |
11 19
|
pm3.2i |
|
| 21 |
|
6re |
|
| 22 |
|
6nn0 |
|
| 23 |
|
6lt10 |
|
| 24 |
3 4 22 23
|
declti |
|
| 25 |
21 24
|
gtneii |
|
| 26 |
|
vscandx |
|
| 27 |
25 26
|
neeqtrri |
|
| 28 |
1 27
|
eqnetri |
|
| 29 |
|
2nn |
|
| 30 |
5 29
|
decnncl |
|
| 31 |
30
|
nnrei |
|
| 32 |
|
7nn |
|
| 33 |
|
2lt7 |
|
| 34 |
5 13 32 33
|
declt |
|
| 35 |
31 34
|
gtneii |
|
| 36 |
|
dsndx |
|
| 37 |
35 36
|
neeqtrri |
|
| 38 |
1 37
|
eqnetri |
|
| 39 |
28 38
|
pm3.2i |
|
| 40 |
20 39
|
pm3.2i |
|