摘 要:
本文研究了自由群的直积的检验元素,通过对直积的自同态的分解,得到了直积中的元素为检验元素的充分必要条件,改进了O’neill和Turner的结果.此外,构造了两类具体的检验元素.[著者文摘]
文章出处:
《数学杂志》-2008年28卷2期 -137-140页
Journal of Mathematics
文献标识码:
A
文章编号:
0255-7797(2008)02-0137-04
[参考文献]
NOTES ON TEST ELEMENTS IN DIRECT PRODUCTS OF FREE GROUPS
PAN Jiang-min, MA Li, LUO Sen-yue (Dept. of Math. ,Yunnan University ,Kunming 650091 ,China)
Abstract:
In this paper, we study test elements in direct products of free groups. By decomposing endomorphism of the direct product, we obtain a necessary and sufficient condition for an element to be a test element in the direct products. This develops the O'neill and Turner' s result on the subject. Moreover,we construct two explicit classes of test elements.[著者文摘]
Key words:
free group; test element ;independent set
收稿日期: 2005-06-15
修订日期: 2006-04-19
基金资助:
Supported by the National Natural Science Foundation of China(10361066)

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