Step |
Hyp |
Ref |
Expression |
1 |
|
cshwshash.0 |
|
2 |
|
elfzoelz |
|
3 |
2
|
zred |
|
4 |
|
elfzoelz |
|
5 |
4
|
zred |
|
6 |
|
lttri2 |
|
7 |
3 5 6
|
syl2anr |
|
8 |
1
|
cshwshashlem2 |
|
9 |
8
|
com12 |
|
10 |
9
|
3expia |
|
11 |
1
|
cshwshashlem2 |
|
12 |
11
|
imp |
|
13 |
12
|
necomd |
|
14 |
13
|
expcom |
|
15 |
14
|
3expia |
|
16 |
15
|
ancoms |
|
17 |
10 16
|
jaod |
|
18 |
7 17
|
sylbid |
|
19 |
18
|
3impia |
|
20 |
19
|
com12 |
|