Notes on roughness in rings

作者：Zhan, Jianming; Davvaz, Bijan^*

来源：Information Sciences, 2016, 346: 488-490.

DOI：10.1016/j.ins.2015.04.039

• Roughness set
• Lower(upper) approximation space
• Rough ideal

In this note, we show by examples that Propositions 3.4, 3.6 and 3.16(ii) in Davvaz (2004) are in correct and offer their modified versions.

• 出版日期2016-6-10
• 单位湖北民族大学