Obstructions to return preservation for episturmian morphisms
<|reference_start|>Obstructions to return preservation for episturmian morphisms: This paper studies obstructions to preservation of return sets by episturmian morphisms. We show, by way of an explicit construction, that infinitely many obstructions exist. This generalizes and improves an earlier result about Sturmian morphisms.<|reference_end|>
@article{berthé2024obstructions,
    title={Obstructions to return preservation for episturmian morphisms},
    author={Val'erie Berth'e, Herman Goulet-Ouellet},
    journal={arXiv preprint arXiv:2404.08072},
    year={2024},
    doi={10.1007/s00224-024-10190-y},
    archivePrefix={arXiv},
    eprint={2404.08072},
    primaryClass={math.CO cs.DM}
}