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arXiv 0706.0101math.GR
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Kurosh分解

Reading Off Kurosh Decompositions

L. Markus-Epstein

摘要:

Stallings提出的处理自由群的生成子群的几何方法被许多作者成功地用于解决自由群及其子群的判定问题。本文利用推广的Stallings折叠方法,给出了一个给定有限群自由积的子群H,从H的子群图中读出其Kurosh分解的过程.

英文摘要:

Geometric methods proposed by Stallings for treating finitely generated subgroups of free groups were successfully used by many authors to solve a wide collection of decision problems for free groups and their subgroups. In the present paper we employ our generalized Stallings' folding method to introduce a procedure, which given a subgroup H of a free product of finite groups reads off its Kurosh decomposition from the subgroup graph of H.

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