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arXiv 2202.00987math.COmath.NT
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阿贝尔群上混合Cayley图的分裂域

Splitting fields of mixed Cayley graphs over abelian groups

Xueyi Huang, Lu Lu, Katja Mönius

摘要:

混合图$Γ$的分裂域$\mathbb{SF}(Γ)$是$\mathbb{Q}$的最小域扩张,它包含了$Γ$的Hermite邻接矩阵的所有特征值.扩张度$[\mathbb{SF}(Γ):\mathbb{Q}]$称为$Γ$的代数度。本文确定了阿贝尔群上混合Cayley图的分裂域和代数度。这推广了[K. Mönius,循环图谱的分裂域,J.代数594(15)(2022)154- 169]和[M.卡迪亚湾张文,张文,等.阿贝尔群上的混合Cayley图.电子学报,2000,21(1):117 - 118. 28(4)(2021)\#P4.46]。

英文摘要:

The splitting field $\mathbb{SF}(Γ)$ of a mixed graph $Γ$ is the smallest field extension of $\mathbb{Q}$ which contains all eigenvalues of the Hermitian adjacency matrix of $Γ$. The extension degree $[\mathbb{SF}(Γ):\mathbb{Q}]$ is called the algebraic degree of $Γ$. In this paper, we determine the splitting fields and algebraic degrees of mixed Cayley graphs over abelian groups. This generalizes the main results of [K. Mönius, Splitting fields of spectra of circulant graphs, J. Algebra 594(15) (2022) 154--169] and [M. Kadyan, B. Bhattacharjya, Integral mixed Cayley graphs over abelian groups, Electron. J. Combin. 28(4) (2021) \#P4.46].

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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