Length functions arising from a group action on an IR-tree
作者:
David L. Wilkens,
期刊:
Communications in Algebra
(Taylor Available online 1994)
卷期:
Volume 22,
issue 1
页码: 321-327
ISSN:0092-7872
年代: 1994
DOI:10.1080/00927879408824847
出版商: Marcel Dekker, Inc.
数据来源: Taylor
摘要:
Abstract length functions on groups were introduced by Lyndon [5]. In [2] Chiswell showed that for a group action on an IR-tree there is a length function associated with each point of the tree, and moreover any length function can occur in this way. This paper establishes necessary and sufficient conditions for two length functions to arise from the same action of a group on a tree.
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