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The Twist Subgroup is generated by two elements
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The Twist Subgroup is generated by two elements

Abstract

We show that the twist subgroup $\mathcal{T}_g$ of a nonorientable surface of genus $g$ can be generated by two elements for every odd $g\geq27$ and even $g\geq42$. Using these generators, we can also show that $\mathcal{T}_g$ can be generated by two or three commutators depending on $g$ modulo $4$. Moreover, we show that $\mathcal{T}_g$ can be generated by three elements if $g\geq 8$. For this general case, the number of commutator generators is either three or four depending on $g$ modulo $4$ again.

Authors

Altunoz T; Pamuk M; Yildiz O

Publication date

March 18, 2021

DOI

10.48550/arxiv.2103.10483

Preprint server

arXiv

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