arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.00174math.AGmath.CO
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有理映射诱导的度量图的自同构群的实现

Realizations of automorphism groups of metric graphs induced by rational maps

Song JuAe

摘要:

对于从度量图$\varGamma$到由有理函数$f_1, \ldots, f_{n + 1}$之比定义的热带射影空间$\boldsymbol{TP^n}$的有理映射$ϕ$,如果$\{ f_1, \ldots, f_{n + 1} \}$是$\langle σ\rangle$ -不变的,则$\varGamma$的自同构$σ$诱导$\boldsymbol{TP^n}$的坐标置换.通过这种描述,我们可以将$Γ$的自同构群实现为欧氏空间的热带一般射影线性群、热带一般线性群和$\boldsymbol{Z}$ -线性变换群等环境自同构群。

英文摘要:

For a rational map $ϕ$ from a metric graph $\varGamma$ to a tropical projective space $\boldsymbol{TP^n}$ defined by a ratio of rational functions $f_1, \ldots, f_{n + 1}$, an automorphism $σ$ of $\varGamma$ induces a permutation of the coordinates of $\boldsymbol{TP^n}$ if $\{ f_1, \ldots, f_{n + 1} \}$ is $\langle σ\rangle$-invariant. Through this description, we can realize the automorphism group of $Γ$ as ambient automorphism group such as tropical projective general linear group, tropical general linear group and $\boldsymbol{Z}$-linear transformation group of Euclidean space.

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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