Central quotients of biautomatic groups

Central quotients of biautomatic groups
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双自动群的中心商

DOI:
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发表时间:
1994
期刊:
影响因子:
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通讯作者:
L. Mosher
L. Mosher
中科院分区:
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文献类型:
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作者:
L. Mosher

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抽象。证明了双自动群与中心子群的商是双自动的。使用的主要工具是Sn-1的Neumann-Shapiro三角剖分,与上的双自动结构相关联。 ${f Z}^n$.在其他应用中,Gersten和Short的一个问题通过证明双自动群的直接因子是双自动的而得到解决。
Abstract. The quotient of a biautomatic group by a subgroup of the center is shown to be biautomatic. The main tool used is the Neumann-Shapiro triangulation of Sn-1, associated to a biautomatic structure on ${f Z}^n$. Among other applications, a question of Gersten and Short is settled by showing that direct factors of biautomatic groups are biautomatic.