The strong Lefschetz property for Artinian algebras with non-standard grading

The strong Lefschetz property for Artinian algebras with non-standard grading
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DOI:
10.1016/j.jalgebra.2007.01.019
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发表时间:
2007-02
期刊:
影响因子:
0.9
通讯作者:
T. Harima;J. Watanabe
T. Harima;J. Watanabe
中科院分区:
数学3区
文献类型:
--
作者:
T. Harima;J. Watanabe

文献摘要

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设A= A_i= 0 cA_i是分次Artin K-代数,其中Ac_i(0),charK=0. (The评分不一定是标准的。)则A具有强Lefschetz性质,如果存在一个元素g∈ A1使得乘法×gc− 2 i:Ai→Ac− i对每个i= 0,1,.,[c/2]都是双射的。本文得到的主要结果如下:
Let A=⊕i=0cAibe a graded Artinian K-algebra, where Ac≠(0) and charK=0. (The grading may not necessarily be standard.) Then A has the strong Lefschetz property if there exists an element g∈A1such that the multiplication ×gc−2i:Ai→Ac−iis bijective for every i=0,1,…,[c/2]. The main results obtained in this paper are as follows: