Dehn 拟群的展示
Presentations of Dehn quandles
AI总结:
本文提出两种利用底层群展示构造 Dehn 拟群显式展示的方法,并给出球面 Artin 群、曲面群和映射类群等实例。
摘要:
本文给出了两种方法,利用其底层群的展示来写出 Dehn 拟群类的显式展示。第一种方法给出了一类 Garside 群和 Gaussian 群的 Dehn 拟群的有限展示。第二种方法适用于一般的 Dehn 拟群,当其底层群生成元的中心化子已知时。文中给出了若干例子,包括球面 Artin 群、曲面群以及可定向曲面映射类群的 Dehn 拟群,以说明这些结果。
英文摘要:
The paper gives two approaches to write explicit presentations for the class of Dehn quandles using presentations of their underlying groups. The first approach gives finite presentations for Dehn quandles of a class of Garside groups and Gaussian groups. The second approach is for general Dehn quandles when the centralisers of generators of their underlying groups are known. Several examples including Dehn quandles of spherical Artin groups, surface groups and mapping class groups of orientable surfaces are given to illustrate the results.
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。