Orders and Actions of Branched Coverings of Hyperbolic Links
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چکیده
LetM , M ′ be compact oriented 3-manifolds and L a link inM ′ whose exterior has positive Gromov norm. We prove that the topological types of M and (M , L) determine the degree of a strongly cyclic covering p : M → M , branched over L. Moreover, if M ′ is an homology sphere then these topological types determine also the covering up to conjugacy.
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تاریخ انتشار 2006