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arXiv math/9912171math.GT
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纽结的连通和与弱可约Heegaard分裂

Connected sums of knots and weakly reducible Heegaard splittings

Yoav Moriah

摘要:

本文研究了作为连通和的纽结的外空间的极小亏格Heegaard分裂是否弱可约的问题。此外,它表明,Heegaard分裂的节Morimoto用来表明隧道数可以是次可加的都是强不可约的。这些是第一个例子的强不可约最小亏格Heegaard分裂的复合结。我们还给出了一个刻划,当一个集合的本原环上的一个单一的身体同时本原。这一点与《易经》中的不同。

英文摘要:

This paper studies the question of whether minimal genus Heegaard splittings of exterior spaces of knots which are connected sums are weakly reducible or not. Furthermore it is shown that the Heegaard splittings of the knots used by Morimoto to show that tunnel number can be sub-additive are all strongly irreducible. These are the first examples of strongly irreducible minimal genus Heegaard splittings of composite knots. We also give a characterization of when is a set of primitive annuli on a handlebody simultaneously primitive. This characterization is different from that given in [Go].

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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