Abstract
Let L be a prime non-splittable alternating oriented link in \(S^{3}\). Claude Weber and the second author showed that the collection of Murasugi atoms and the adjacency graph of Murasugi decomposition are topological invariants of L. As a consequence, we note that if L has a q-periodic alternating diagram then the adjacency graph admits an automorphism of order q and each Murasugi atom of L is either q-periodic or occurs a multiple of q times in the atoms collection of L. We apply this fact to study the leading coefficient of the Conway polynomial of this type of links.
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We wish to thank the referees for their corrections and very relevant suggestions and to Ana M. Porto for improvements.
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To Professor María Teresa Lozano on the occasion of her 70th birthday.
A. F. Costa partially supported by the project MTM2014-55812-P.
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Costa, A.F., Van Quach Hongler, C. Murasugi decomposition and periodic alternating links. RACSAM 112, 793–802 (2018). https://doi.org/10.1007/s13398-017-0479-3
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DOI: https://doi.org/10.1007/s13398-017-0479-3