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初等自同构和分次Betti数(英文)

Elementary automorphisms and graded Betti numbers
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摘要 研究了in(φiaj(I))与I的分次Betti数间的关系;I为单项式理想时,存在整数序列(i1,j1),…,(ir,jr)满足ik<jk,k=1,…,r,使得in(φiarjr(…in(φai1j1(I))…)为强稳定理想,且in(φiarjr(…in(iaφ1j1(I))…)是唯一的. We study the relationship of the graded Betti numbers between in( ψij^α ( I ) )and I, When I is a monomial ideal, there exists a sequence of pairs of integers( i 1, J 1 ) ,…, ( ir, jr ) with ik 〈 jk for k = 1 ,…, r, such that in( ψrrjr^α (…in(ψi1j1^α ( I ) )… ) ) is strongly stable, and we show that in( ψirjr^α(…in( ψi1j1^α ( I ) )… ) ) is unique.
作者 朱广俊
出处 《苏州大学学报(自然科学版)》 CAS 2005年第4期17-23,共7页 Journal of Soochow University(Natural Science Edition)
基金 SupportedbyNationalScienceFoundationofChina(10371085)
关键词 初等自同构 分次Betti数 稳定理想 强稳定理想 elementary automorphism graded Bet ti number stable ideal strongly stable ideal
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参考文献6

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