Translation equivalent elements in free groups

Details Translation equivalent elements in free groups Translation equivalent elements in free groups

2006-04-20

arxiv.org/abs/math/0604435v1

J. Group Theory, vol.9 (2006), pp.809-814

Mathematics

Group Theory

7pages

Scientific paper

Let F_n be a free group of rank n>1. Two elements g, h in F_n are said to be translation equivalent in F_n if the cyclic length of \phi(g) equals the cyclic length of \phi(h) for every automorphism \phi of F_n. Let F(a, b) be the free group generated by {a, b} and let w(a,b) be an arbitrary word in F(a,b). We prove that w(g, h) and w(h, g) are translation equivalent in F_n whenever g, h \in F_n are translation equivalent in F_n, which hereby gives an affirmative solution to problem F38b in the online version (http://www.grouptheory.info) of [1].

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