@inproceedings{hayakawa-sato-2025-theoretical, title = "Theoretical Analysis of Hierarchical Language Recognition and Generation by Transformers without Positional Encoding", author = "Hayakawa, Daichi and Sato, Issei", editor = "Che, Wanxiang and Nabende, Joyce and Shutova, Ekaterina and Pilehvar, Mohammad Taher", booktitle = "Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)", month = jul, year = "2025", address = "Vienna, Austria", publisher = "Association for Computational Linguistics", url = "https://preview.aclanthology.org/ingestion-acl-25/2025.acl-long.1488/", pages = "30777--30834", ISBN = "979-8-89176-251-0" }