Description: If cyclically shifting a word by two positions results in the same word, cyclically shifting the word by the difference of these two positions results in the original word itself. (Contributed by AV, 21-Apr-2018) (Revised by AV, 7-Jun-2018) (Revised by AV, 1-Nov-2018)
Ref | Expression | ||
---|---|---|---|
Assertion | cshweqdifid | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | id | |
|
2 | 1 | ancli | |
3 | 2 | anim1i | |
4 | 3 | 3impb | |
5 | cshweqdif2 | |
|
6 | 4 5 | syl | |