| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 396119 | Information Sciences | 2007 | 7 Pages |
Abstract
In this note, we show by examples that Propositions 2.4 and 2.5 in [N. Kuroki, P.P. Wang, The lower and upper approximations in a fuzzy group, Information Sciences 90 (1996) 203] and Theorem 2.5 in [N. Kuroki, Rough ideals in semigroups, Information Sciences 100 (1997) 139] are incorrect and offer their modified versions.
Related Topics
Physical Sciences and Engineering
Computer Science
Artificial Intelligence
Authors
Wei Cheng, Zhi-Wen Mo, Jue Wang,