arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1602.08012math.GR
收藏

商群中的粗糙性

Roughness in quotient groups

Waqas Mahmood

摘要:

粗糙集理论最早是由Pawlak提出的(参见\cite{p})。粗糙集与群、环、模等代数系统之间的关系一直是数学界研究的热点。本文将引入商群中的上、下近似。我们将讨论下近似和上近似的几个性质。此外,在一些额外的假设下,我们能够证明下近似是商群的正规子群,但这一性质失败的上近似。最后,我们将发展几个下近似之间的同态。

英文摘要:

The theory of rough sets was firstly introduced by Pawlak (see \cite{p}). Many Mathematician has been studied the relations between rough sets and algebraic systems such as groups, rings and modules. In this paper we will introduce the lower and upper approximations in a quotient group. We will discuss several properties of the lower and upper approximations. Moreover under some additional assumptions we are able to show that the lower approximation is a normal subgroup of the quotient group but this property fails for the upper approximation. At the end we will develop several homomorphisms between lower approximations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑