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《山东大学学报(理学版)》 ›› 2021, Vol. 56 ›› Issue (4): 20-24.doi: 10.6040/j.issn.1671-9352.0.2020.625

• • 上一篇    

唯一clean元的刻画

应志领,张晶,胡国雷,周华   

  1. 南京邮电大学理学院, 江苏 南京 210023
  • 发布日期:2021-04-13
  • 作者简介:应志领(1982— ),男,博士,副教授,研究方向为环论与广义逆理论. E-mail:yingzl@njupt.edu.cn
  • 基金资助:
    南京邮电大学校级科研基金资助(NY220061)

Characterizations of uniquely clean elements

YING Zhi-ling, ZHANG Jing, HU Guo-lei, ZHOU Hua   

  1. College of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, Jiangsu, China
  • Published:2021-04-13

摘要: 环中的元素称为唯一clean元,是指它能唯一表示成为一个幂等元和一个可逆元的和。环R中的元素称为左唯一exchange的,是指存在一个唯一的幂等元e∈R使得e∈Ra且1-e∈R(1-a)。 如果环R中的幂等元都是中心元,那么a∈R是唯一clean的当且仅当它是左唯一exchange元。最后,给出了赋予Zariski拓扑的交换环中唯一clean元的一个刻画。

关键词: 唯一clean元(环), 唯一exchange元(环), Zariski拓扑

Abstract: An element of a ring is called uniquely clean if it is uniquely the sum of an idempotent and a unit. An element a in a ring R is said to be left uniquely exchange if there exists a uniquely idempotent e∈R such that e∈Ra and 1-e∈R(1-a). If every idempotent of a ring R is in the center, then a∈R is uniquely clean iff a is left uniquely exchange. A characterization of uniquely clean elements in a commutative ring endowed with the Zariski topology is also given.

Key words: uniquely clean element(ring), uniquely exchange element(ring), Zariski topology

中图分类号: 

  • O153.3
[1] NICHOLSON W K. Lifting idempotents and exchange rings[J]. Trans Amer Math Soc, 1977, 229:269-278.
[2] GOODEARL K R, WARFIELD R B. Algebras over zero-dimensional rings[J]. Math Ann, 1976, 223:157-168.
[3] ANDERSON D D, CAMILLO V P. Commutative rings whose elements are a sum of a unit and idempotent[J]. Comm Algebra, 2002, 30:3327 - 3336.
[4] NICHOLSON W K, ZHOU Y Q. Rings in which elements are uniquely the sum of an idempotent and a unit[J]. Glasgow Math, 2004, 46:227-236.
[5] CHEN J L, NICHOLSON W K, ZHOU Y Q. Group rings in which every element is uniquely the sum of a unit and an idempotent[J]. J Algebra, 2006, 306:453-460.
[6] CHEN J L, WANG Z, ZHOU Y Q. Rings in which elements are uniquely the sum of an idempotent and a unit that commute[J]. Pure Appl Algebra, 2009, 213:215-223.
[7] YING Z L, CHEN J L. On quasipolar rings[J]. Algebra Colloq, 2012, 19:683-692.
[8] YING Z L, FU M M. On Strongly Jn-clean rings[J]. Bull Iranian Math Soc, 2019, 45:627-639.
[9] KOSAN T, WANG Z, ZHOU Y Q. Nil-clean and strongly nil-clean rings[J]. Pure Appl Algebra, 2016, 220:633-646.
[10] PURKAIT S, DUTTA T K, KAR S. On m-clean and strongly m-clean rings[J]. Comm Algebra, 2020, 6:218-227.
[11] LEE T K, ZHOU Y Q. A class of exchange rings[J]. Glasgow Math, 2008, 50:509-522.
[12] YING Z L. Clean rings and regular local rings[D]. Nanjing: Southeast University, China, 2008.
[13] NICHOLSON W K. On exchange rings[J]. Comm Algebra, 1997, 25:1917-1918.
[14] NICHOLSON W K. Strongly clean rings and Fittings lemma[J]. Comm Algebra, 1999, 27:3583-3592.
[15] NICHOLSON W K, YOUSIF M F. Principally injective rings[J]. J Algebra, 1995, 174:77-93.
[16] HONG C Y, KIM N K, LEE Y. Exchange rings and their extensions[J]. Pure Appl Algebra, 2003, 179:117-126.
[17] VARADARAJAN K. Clean, almost clean, potent commutative rings[J]. Algebra Appli, 2007, 6:671-685.
[18] MCGOVERN W W. Neat rings[J]. Pure Appl Algebra, 2006, 205:243-265.
[19] SILVESTER J R. Introduction to algebraic K-theory[M]. London: Chapman and Hall, 1981.
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