Step |
Hyp |
Ref |
Expression |
1 |
|
setsidel.s |
|
2 |
|
setsidel.b |
|
3 |
|
setsidel.r |
|
4 |
|
setsnidel.c |
|
5 |
|
setsnidel.d |
|
6 |
|
setsnidel.s |
|
7 |
|
setsnidel.n |
|
8 |
4
|
elexd |
|
9 |
7
|
necomd |
|
10 |
|
eldifsn |
|
11 |
8 9 10
|
sylanbrc |
|
12 |
|
opelres |
|
13 |
5 12
|
syl |
|
14 |
11 6 13
|
mpbir2and |
|
15 |
|
elun1 |
|
16 |
14 15
|
syl |
|
17 |
|
setsval |
|
18 |
1 2 17
|
syl2anc |
|
19 |
3 18
|
syl5eq |
|
20 |
16 19
|
eleqtrrd |
|