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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)

 

There are knots whose tunnel numbers go down under connected sum


Author: Kanji Morimoto
Journal: Proc. Amer. Math. Soc. 123 (1995), 3527-3532
MSC: Primary 57M25
MathSciNet review: 1317043
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Abstract: In this paper, we show that there are infinitely many tunnel number two knots K such that the tunnel number of $ K\char93 K'$ is equal to two again for any 2-bridge knot $ K'$.


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Additional Information

DOI: http://dx.doi.org/10.1090/S0002-9939-1995-1317043-4
PII: S 0002-9939(1995)1317043-4
Keywords: Knots, tunnel numbers, connected sum
Article copyright: © Copyright 1995 American Mathematical Society