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Epimorphisms between 2–bridge link groups

By Tomotada Ohtsuki, Robert Riley and Makoto Sakuma


We give a systematic construction of epimorphisms between 2–bridge link groups. Moreover, we show that 2–bridge links having such an epimorphism between their link groups are related by a map between the ambient spaces which only have a certain specific kind of singularity. We show applications of these epimorphisms to the character varieties for 2–bridge links and π1 –dominating maps amon

Year: 2008
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