Description: A transposition is an odd permutation. (Contributed by SO, 9-Jul-2018)
Ref | Expression | ||
---|---|---|---|
Hypotheses | evpmodpmf1o.s | |
|
evpmodpmf1o.p | |
||
pmtrodpm.t | |
||
Assertion | pmtrodpm | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | evpmodpmf1o.s | |
|
2 | evpmodpmf1o.p | |
|
3 | pmtrodpm.t | |
|
4 | simpl | |
|
5 | 3 1 2 | symgtrf | |
6 | 5 | sseli | |
7 | 6 | adantl | |
8 | eqid | |
|
9 | 1 3 8 | psgnpmtr | |
10 | 9 | adantl | |
11 | 1 2 8 | psgnodpmr | |
12 | 4 7 10 11 | syl3anc | |