Uniform recurrence conjecture for the Thue–Morse two-block fixed point

Let x(00)x^{(00)} be the fixed point of the Thue–Morse two-block substitution. A word is uniformly recurrent when every finite factor occurring in x(00)x^{(00)} occurs there with bounded gaps. Uniform recurrence conjecture. x(00)x^{(00)} is uniformly recurrent. Uniform recurrence is presented as one of the conjectures related to the difficulty of understanding the language of this fixed point, alongside questions about word frequencies.

Sources & referencesView supporting material

Primary source

Michel Dekking and Mike Keane, “Two-block substitutions and morphic words”, arXiv:2202.13548 (2023).

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