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cs.FL2013
On the Number of Closed Factors in a Word
Golnaz Badkobeh, Gabriele Fici, Zsuzsanna Lipták
A closed word (a.k.a. periodic-like word or complete first return) is a word whose longest border does not have internal occurrences, or, equivalently, whose longest repeated prefi…
cs.FL2011★ 8 cited
Finite-Repetition threshold for infinite ternary words
Golnaz Badkobeh, Maxime Crochemore
The exponent of a word is the ratio of its length over its smallest period. The repetitive threshold r(a) of an a-letter alphabet is the smallest rational number for which there ex…