2013/08/09 by Serina Camungol, Narad Rampersad, Camungol, Serina +1
Mathematics · #68R15 #Combinatorics (math.CO) #FOS: Mathematics #math.CO #msc:68R15
paper · pdf · doi:10.48550/arxiv.1308.2163
arxiv created 2013/08/09 · arxiv updated 2013/08/12
In 2008, Kurosaki gave a new construction of a (bi-)infinite squarefree word over three letters. We show that in fact Kurosaki's word avoids 7/4+-powers, which, as shown by Dejean, is optimal over a 3-letter alphabet.