Abstract
This paper initiates the study of shortening universal cycles (u-cycles) and universal words (u-words) for permutations either by using incomparable elements, or by using non-deterministic symbols. The latter approach is similar in nature to the recent relevant studies for the de Bruijn sequences. A particular result we obtain in this paper is that u-words for n-permutations exist of lengths n!+(1−k)(n−1) for k=0,1,…,(n−2)!.
Original language | English |
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Pages (from-to) | 203-213 |
Number of pages | 11 |
Journal | Discrete Applied Mathematics |
Volume | 260 |
Early online date | 6 Feb 2019 |
DOIs | |
Publication status | Published - 15 May 2019 |
Keywords
- universal cycles
- universal words
- permutations
- mathematics
- computation