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arXiv 2204.08010math.CO
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平面带状图的部分连通性

Partial-duals for planar ribbon graphs

Qiyao Chen, Yichao Chen

摘要:

2009年,Chmutov引入了带状图$G$的部分对偶。最近Gross,Mansour和Tucker用亏格列举了$G$的所有可能的部分亏格,并引入了带状图$G.$的部分对偶亏格多项式。首先,我们得到了平面带状图的最大部分对偶亏格的一个公式,并否定了Gross,Mansour和Tucker的插值猜想。证明了平面带状图$G-e$和平面带状图$G$的部分对偶亏格多项式之间存在递归关系。此外,还给出了两个相关的结果.这些递推关系为计算某些平面带状图的部分亏格对偶多项式提供了新的途径。此外,我们还证明了部分对偶亏格分布的渐近正态性。

英文摘要:

In 2009, Chmutov introduced the partial-duality for a ribbon graph $G$. Recently, Gross, Mansour and Tucker enumerated all possible partial-duals of $G$ by genus and introduced the partial-dual genus polynomial of a ribbon graph $G.$ This paper mainly enumerates partial-duals for planar ribbon graphs. First, we obtain a formula for the maximum partial-dual genus for any planar ribbon graph and give a negative answer to the interpolating conjecture of Gross, Mansour and Tucker. Then we show that there is a recurrence relation between the partial-dual genus polynomials of planar ribbon graphs $G-e$ and $G$. Furthermore, two related results are also given. These recurrence relations give new approaches to calculate the partial-genus dual polynomials for some planar ribbon graphs. In addition, we prove the asymptotic normality for some partial-dual genus distributions.

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