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Knots which are branched cyclic covers of only finitely many knots

Published online by Cambridge University Press:  24 October 2008

Paul Strickland
Affiliation:
Department of Mathematical Sciences, University of Durham

Extract

In [5] we proved two results: theorem 1, which said that if k was a simple (2q – 1)-knot, q 1, then it was equivalent to the m-fold branched cyclic cover of another knot if and only if there existed an isometry u of its Blanchfield pairing 〈,〉, whose mth power was the map induced by a generator t of the group of covering translations associated with the infinite cyclic cover of k; and theorem 2, which showed that if k were the m-fold b.c.c. of two such knots, then these would be equivalent if and only if the corresponding isometries were conjugate by an isometry of 〈,〉. Using this second result, we present two cases where k may only be the m-fold b.c.c. of finitely many knots.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1985

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References

REFERENCES

[1]Bayee, E. and Michel, F.. Finitude du nombre des classes d'isomorphisme des structures isome'triques entiéres. Comment. Math. Helv. 54 (1979), 378396.Google Scholar
[2]Curtis, C. W. and Reiner, I.. Methods of Representation Theory, with Applications to Finite Groups and Orders I (Wiley-Interscience, 1981).Google Scholar
[3]Hartley, R.. Knots with free period. Canad. J. Math. 33 (1981), 91102.CrossRefGoogle Scholar
[4]Hillman, J.. Blanchfield pairings with squarefree Alexander polynomial. Math. Z. 176 (1981), 551563.CrossRefGoogle Scholar
[5]Strickland, P. M.. Branched cyclic covers of simple knots. Proc. Amer. Math. Soc. 90 (1984), 440444.CrossRefGoogle Scholar
[6]Strickland, P. M.. Ph.D. thesis, University of Durham (1984).Google Scholar