Introduction To Automata Theory, Languages, And Computation
Introduction To Automata Theory, Languages, And Computation
Automatic Sequences: Theory, Applications, Generalizations
Automatic Sequences: Theory, Applications, Generalizations
Polynomial versus exponential growth in repetition-free binary words
Journal of Combinatorial Theory Series A
A generalization of Thue freeness for partial words
Theoretical Computer Science
Cyclically repetition-free words on small alphabets
Information Processing Letters
Avoiding large squares in partial words
Theoretical Computer Science
Hunting redundancies in strings
DLT'11 Proceedings of the 15th international conference on Developments in language theory
Fewest repetitions versus maximal-exponent powers in infinite binary words
Theoretical Computer Science
Length-k-overlap-free Binary Infinite Words
Fundamenta Informaticae - Words, Graphs, Automata, and Languages; Special Issue Honoring the 60th Birthday of Professor Tero Harju
Infinite words containing the minimal number of repetitions
Journal of Discrete Algorithms
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We consider three aspects of avoiding large squares in infinite binary words. First, we construct an infinite binary word avoiding both cubes xxx and squares yy with |y| ≥4; our construction is somewhat simpler than the original construction of Dekking. Second, we construct an infinite binary word avoiding all squares except 02, 12, and (01)2; our construction is somewhat simpler than the original construction of Fraenkel and Simpson. In both cases, we also show how to modify our construction to obtain exponentially many words of length n with the given avoidance properties. Finally, we answer an open question of Prodinger and Urbanek from 1979 by demonstrating the existence of two infinite binary words, each avoiding arbitrarily large squares, such that their perfect shuffle has arbitrarily large squares.