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总览 评价 夏军 , 王显金 * ( 重庆大学数学与统计学院,重庆 401331; ) 摘要: 强嵌入是介于粗嵌入与性质 之间的一种度量几何性质。本文研究强嵌入在自由积以及融合自由积下的保持性质,我们证明了两个可强嵌入的离散群的自由积是可强嵌入的。更一般的,
夏军, 王显金*
(
重庆大学数学与统计学院,重庆 401331; )
摘要:
强嵌入是介于粗嵌入与性质 之间的一种度量几何性质。本文研究强嵌入在自由积以及融合自由积下的保持性质,我们证明了两个可强嵌入的离散群的自由积是可强嵌入的。更一般的,我们证明对于任何可强嵌入的公共子群,他们的融合自由积也是可强嵌入的。
关键词:
强嵌入;融合自由积;保持性质
Xia Jun1,, Wang Xianjin2,*
(
1、College of Mathematics and Statistics, Chongqing University, Chongqing 401331; 2、College of Mathematics and Statistics ,Chongqing University, Chongqing 401331; )
Abstract:
The strong embeddability is a notion of metric geometry, which is an intermediateproperty lying between coarse embeddability and property . In this paper, we study the strong embeddability of free products and amalgamated free products of discrete groups. We prove that if and are strongly embeddable groups free product of two strongly embeddable groups is strongly embeddable. Generally, we prove that for any common subgroup, their amalgamated free product is also strongly embeddable.
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