Step |
Hyp |
Ref |
Expression |
1 |
|
pjoml2.1 |
|
2 |
|
pjoml2.2 |
|
3 |
|
inss1 |
|
4 |
1
|
choccli |
|
5 |
2
|
choccli |
|
6 |
4 5
|
chjcli |
|
7 |
2 6
|
chincli |
|
8 |
7 2 1
|
chlej2i |
|
9 |
3 8
|
ax-mp |
|
10 |
1 7
|
chub1i |
|
11 |
1 2
|
chdmm1i |
|
12 |
11
|
ineq1i |
|
13 |
|
incom |
|
14 |
12 13
|
eqtri |
|
15 |
14
|
oveq2i |
|
16 |
|
inss2 |
|
17 |
1 2
|
chincli |
|
18 |
17 2
|
pjoml2i |
|
19 |
16 18
|
ax-mp |
|
20 |
15 19
|
eqtr3i |
|
21 |
|
inss1 |
|
22 |
17 1 7
|
chlej1i |
|
23 |
21 22
|
ax-mp |
|
24 |
20 23
|
eqsstrri |
|
25 |
1 7
|
chjcli |
|
26 |
1 2 25
|
chlubii |
|
27 |
10 24 26
|
mp2an |
|
28 |
9 27
|
eqssi |
|