On automorphisms of finite abelian p-groups

被引:6
|
作者
Golasinski, Marek [1 ]
Goncalves, Daciberg Lima [2 ]
机构
[1] Nicholas Copernicus Univ, Fac Math & Comp Sci, PL-87100 Torun, Poland
[2] Univ Sao Paulo, IME, Dept Math, BR-05314970 Sao Paulo, Brazil
关键词
finite abelian p-group; automorphism group; semi-direct product;
D O I
10.2478/s12175-008-0084-1
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
Let A be a finitely generated abelian group. We describe the automorphism group Aut(A) using the rank of A and its torsion part p-part A(p). For a finite abelian p-group A of type (k(1),..., k(n)), simple necessary and sufficient conditions for an n x n-matrix over integers to be associated with an automorphism of A are presented. Then, the automorphism group Aut(A) for a finite p-group A of type (k(1), k(2)) is analyzed. (C) 2008 Mathematical Institute Slovak Academy of Sciences.
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页码:405 / 412
页数:8
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