The ubiquitous prouhet-thue-morse sequence

JP Allouche, J Shallit - Sequences and their Applications: Proceedings of …, 1999 - Springer
We discuss a well-known binary sequence called the Thue-Morse sequence, or the Prouhet-
Thue-Morse sequence. This sequence was introduced by Thue in 1906 and rediscovered by …

[图书][B] The logical approach to automatic sequences: Exploring combinatorics on words with Walnut

J Shallit - 2022 - books.google.com
Automatic sequences are sequences over a finite alphabet generated by a finite-state
machine. This book presents a novel viewpoint on automatic sequences, and more …

Avoiding Abelian powers in binary words with bounded Abelian complexity

J Cassaigne, G Richomme, K Saari… - International Journal of …, 2011 - World Scientific
The notion of Abelian complexity of infinite words was recently used by the three last authors
to investigate various Abelian properties of words. In particular, using van der Waerden's …

Periodicity, repetitions, and orbits of an automatic sequence

JP Allouche, N Rampersad, J Shallit - Theoretical Computer Science, 2009 - Elsevier
We revisit a technique of S. Lehr on automata and use it to prove old and new results in a
simple way. We give a very simple proof of the 1986 theorem of Honkala that it is decidable …

[图书][B] Combinatorics, words and symbolic dynamics

V Berthé, M Rigo - 2016 - books.google.com
Internationally recognised researchers look at developing trends in combinatorics with
applications in the study of words and in symbolic dynamics. They explain the important …

Decidability and enumeration for automatic sequences: a survey

J Shallit - International Computer Science Symposium in Russia, 2013 - Springer
In this talk I will report on some recent results concerning decidability and enumeration for
properties of automatic sequences. This is work with Jean-Paul Allouche, Émilie Charlier …

The analogue of overlap-freeness for the period-doubling sequence

JD Currie - arXiv preprint arXiv:2303.14539, 2023 - arxiv.org
Good words are binary words avoiding factors 11 and 1001, and patterns 0000 and
00010100. We show that good words bear the same relationship to the period-doubling …

Non-integer bases, iteration of continuous real maps, and an arithmetic self-similar set

JP Allouche, M Cosnard - Acta Mathematica Hungarica, 2001 - Springer
We prove that a recent result of Komornik and Loreti on the smallest real number q in (1, 2)
such that the number 1 admits a unique q-expansion can be deduced from a result of the …

Squares and overlaps in the Thue-Morse sequence and some variants

S Brown, N Rampersad, J Shallit… - RAIRO-Theoretical …, 2006 - cambridge.org
We consider the position and number of occurrences of squares in the Thue-Morse
sequence, and show that the corresponding sequences are 2-regular. We also prove that …

Fife's theorem revisited

J Shallit - Developments in Language Theory: 15th International …, 2011 - Springer
We give another proof of a theorem of Fife—understood broadly as providing a finite
automaton that gives a complete description of all infinite binary overlap-free words. Our …