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arXiv 2404.03463math.GT
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Adequate链环的一个简单刻画

A Simple Characterization of Adequate Links

Khaled Qazaqzeh, Nafaa Chbili

AI总结:

本文利用Jones多项式广度与Turaev亏数等数值不变量,给出了adequate链环的简单刻画,并应用于阻止拟交错性及确定交叉数下界。

摘要:

我们证明,当链环的Jones多项式的广度等于其交叉数与Turaev亏数之差时,其Jones直径是其交叉数的两倍。这蕴含该链环是adequate的,正如[5,定理1.1]所提供的刻画所述。将此与[1,定理3.2]中的结果相结合,我们利用这些数值链环不变量获得了adequate链环的一个刻画。作为应用,我们提供了一个阻止链环成为拟交错链环的判据。此外,我们为某些类别的链环建立了交叉数的下界,有助于在特定情况下确定链环的交叉数。

英文摘要:

We prove that the Jones diameter of a link is twice its crossing number whenever the breadth of its Jones polynomial equals the difference between the crossing number and the Turaev genus. This implies that such link is adequate, as per the characterization provided in [5, Theorem 1.1]. By combining this with the result in [1, Theorem 3.2], we obtain a characterization of adequate links using these numerical link invariants. As an application, we provide a criterion to obstruct a link from being quasi-alternating. Furthermore, we establish a lower bound for the crossing number of certain classes of links, aiding in determining the crossing number of the link in specific cases.

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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