| Step |
Hyp |
Ref |
Expression |
| 1 |
|
merco2 |
|
| 2 |
|
mercolem1 |
|
| 3 |
|
mercolem1 |
|
| 4 |
2 3
|
ax-mp |
|
| 5 |
|
mercolem5 |
|
| 6 |
|
mercolem4 |
|
| 7 |
5 6
|
ax-mp |
|
| 8 |
4 7
|
ax-mp |
|
| 9 |
1 8
|
ax-mp |
|
| 10 |
|
mercolem1 |
|
| 11 |
|
mercolem1 |
|
| 12 |
10 11
|
ax-mp |
|
| 13 |
|
mercolem5 |
|
| 14 |
|
mercolem4 |
|
| 15 |
13 14
|
ax-mp |
|
| 16 |
12 15
|
ax-mp |
|
| 17 |
1 16
|
ax-mp |
|
| 18 |
9 17
|
ax-mp |
|
| 19 |
1 18
|
ax-mp |
|
| 20 |
1 19
|
ax-mp |
|
| 21 |
1 20
|
ax-mp |
|