A note on coverings of virtual knots

A note on coverings of virtual knots
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DOI:
10.1142/s0218216519710020
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发表时间:
2018-11
影响因子:
0.5
通讯作者:
Takuji Nakamura;Yasutaka Nakanishi;S. Satoh
Takuji Nakamura;Yasutaka Nakanishi;S. Satoh
中科院分区:
数学4区
文献类型:
--
作者:
Takuji Nakamura;Yasutaka Nakanishi;S. Satoh

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对于虚结[Formula:see text]和整数[Formula:see text],[Formula:see text]覆盖[Formula:see text]通过使用[Formula:see text]的高斯图上的弦的索引来定义。在本文中,我们证明了对于任何有限的虚结集[公式:见正文],存在一个虚结[公式:见正文]使得[公式:见正文],[公式:见正文],否则[公式:见正文]。
For a virtual knot [Formula: see text] and an integer [Formula: see text], the [Formula: see text]-covering [Formula: see text] is defined by using the indices of chords on a Gauss diagram of [Formula: see text]. In this paper, we prove that for any finite set of virtual knots [Formula: see text], there is a virtual knot [Formula: see text] such that [Formula: see text], [Formula: see text], and otherwise [Formula: see text].