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1. Notes on ¡°the lower and upper approximations in a fuzzy group¡± and ¡°rough ideals in semigroups¡± Information Sciences, Volume 177, Issue 22, 15 November 2007, Pages 5134-5140 Wei Cheng, Zhi-Wen Mo, Jue Wang 2. A note on locally bounded L-topological vector spaces Information Sciences, Volume 179, Issue 11, 13 May 2009, Pages 1792-1794 Hua-Peng Zhang, Jin-Xuan Fang 3. Note on ¡°Generalized rough sets based on reflexive and transitive relations¡± Information Sciences, Volume 179, Issue 4, 1 February 2009, Pages 471-473 Hua-Peng Zhang, Yao Ouyang, Zhudeng Wang 3. |
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Notes on ''the lower and upper approximations in a fuzzy group'' and ''rough ideals in semigroups'' ¸ü¶àÑ¡Ïî ×÷Õß: Wei Cheng; Zhi-Wen Mo; Jue Wang À´Ô´³ö°æÎï: Information Sciences ¾í: 177 ÆÚ: 22 Ò³: 5134-40 ³ö°æÄê: 15 November 2007 ÕªÒª: 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.[All rights reserved Elsevier]. Èë²ØºÅ: 9637198 ÎÄÏ×ÀàÐÍ: Journal Paper ÓïÑÔ: English ´¦ÀíÀàÐÍ: Theoretical or Mathematical ÊÜ¿ØË÷Òý: fuzzy set theory; group theory; rough set theory ·ÇÊÜ¿ØË÷Òý: normal subgroup; rough sets theory; semigroups; fuzzy group ·ÖÀà´úÂë: A0220 Group theory; A0210 Algebra, set theory, and graph theory; B0250 Combinatorial mathematics; B0210 Algebra; C1160 Combinatorial mathematics; C1110 Algebra ×÷ÕßµØÖ·: Wei Cheng; Univ. of Electron. Sci. & Technol. of China, Chengdu, China ³ö°æÉÌ: Elsevier Science Publishing Co. Inc., USA ²Î¿¼ÎÄÏ×Êý: 4 CODEN: ISIJBC ISSN: 0020-0255 ÎÄÏ׺Å: S0020-0255(06)00368-9 DOI: 10.1016/j.ins.2006.12.006 |
5Â¥2010-01-01 20:11:27













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