Generalizing the results of Thue (for n = 2) [Norske Vid. Selsk. Skr. Mat. Nat. Kl. 1 (1912) 1-67] and of Klepinin and Sukhanov (for n = 3) [Discrete Appl. Math. 114 (2001) 155-169], we prove that for all n ≥ 2, the critical exponent of the Arshon word of order n is given by (3n-2)/(2n-2), and this exponent is attained at position 1.
@article{ITA_2010__44_1_139_0, author = {Krieger, Dalia}, title = {The critical exponent of the Arshon words}, journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications}, volume = {44}, year = {2010}, pages = {139-150}, doi = {10.1051/ita/2010009}, mrnumber = {2604939}, zbl = {1184.68375}, language = {en}, url = {http://dml.mathdoc.fr/item/ITA_2010__44_1_139_0} }
Krieger, Dalia. The critical exponent of the Arshon words. RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications, Tome 44 (2010) pp. 139-150. doi : 10.1051/ita/2010009. http://gdmltest.u-ga.fr/item/ITA_2010__44_1_139_0/
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