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 |
|