A family of formulas with reversal of arbitrarily high avoidability index
Abstract
We present a family of avoidable formulas with reversal whose avoidability index is unbounded. We also complete the determination of the avoidability index of the formulas with reversal in the 3-avoidance basis.
- Publication:
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arXiv e-prints
- Pub Date:
- March 2021
- DOI:
- 10.48550/arXiv.2103.07693
- arXiv:
- arXiv:2103.07693
- Bibcode:
- 2021arXiv210307693O
- Keywords:
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- Mathematics - Combinatorics;
- 68R15
- E-Print:
- 4 pages