Vladimir Turaev
Published 2005-03-29, updated 2005-05-30Version 2
We introduce a topological approach to words. Words are approximated by Gauss words and then studied up to natural modifications inspired by homotopy transformations of curves on the plane.
Comments: 59 pages, 4 figures. In the second version I added a discussion of the S-homotopy of words (Section 2)
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