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...Avoiding fractional powers on an innite alphabet eric rowland hofstra university oneworldseminaroncombinatoricsonwords squares axel thue asquareis a nonempty word of the form xx for example are there arbitrarily long square free words try to construct one x whatis lexicographically least z theorem guay paquet shallit let n thelexicographically is uniform each integer power overlaps anoverlap xxc where c rst letter avoidable binary overlap and...