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Milnor方图中的w-凝聚性
引用本文:王芳贵.Milnor方图中的w-凝聚性[J].数学学报,2012(1):65-76.
作者姓名:王芳贵
作者单位:四川师范大学数学与软件科学学院
基金项目:国家自然科学基金资助项目(10671137)
摘    要:整环R称为ω-凝聚整环,是指R的每个有限型理想是有限表现型的.本文证明了ω-凝聚整环是v-凝聚整环,且若(RDTF,M)是Milnor方图,则在Ⅰ型情形,R是ω-凝聚整环当且仅当D和T都是ω-整环,且T_M是赋值环;对于Ⅱ-型情形,R是ω-凝聚整环当且仅当D是域,F:D]<∞,M是R的有限型理想,T是ω-凝聚整环,且R_M是凝聚整环.

关 键 词:ω-模  有限型模  有限表现型模  ω-凝聚整环

w-Coherence in Milnor Squares
Fang Gui WANG.w-Coherence in Milnor Squares[J].Acta Mathematica Sinica,2012(1):65-76.
Authors:Fang Gui WANG
Institution:Fang Gui WANG College of Mathematics and Software Science,Sichuan Normal University, Chengdu 610068,P.R.China
Abstract:A domain R is called w-coherent if every finite type ideal is of finitely presented type.In this paper we show that w-coherent domains are v-coherent and if (RDTF,M) is a Milnor square,then for the case that F is the quotient field of D,R is w-coherent if and only if D and T are in-coherent and T_m is a valuation domain;and for the case that F is not the quotient field of D,R is w-coherent if and only if D is a field,F:D]<∞,M is a finite type ideal of R,T is w-coherent and R_m is coherent.
Keywords:w-module  finite type  finitely presented type  w-coherent domain
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