Notes on "the lower and upper approximations in a fuzzy group" and "rough ideals in semigroups"

Information Sciences

Volumn 177, Issue 22, 2007, Pages 5134-5140

  Cheng, Wei ^a   Mo, Zhi Wen ^b   Wang, Jue ^c  

^a UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA   (China)

^b SICHUAN NORMAL UNIVERSITY   (China)

^c INSTITUTE OF AUTOMATION   (China)

Author keywords

Group; Ideal; Normal subgroup; Ring; Rough set

Indexed keywords

FUZZY SETS; INFORMATION SCIENCE; ROUGH SET THEORY; THEOREM PROVING;

FUZZY GROUPS; UPPER APPROXIMATIONS;

APPROXIMATION THEORY;

EID: 34548255283     PISSN: 00200255     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.ins.2006.12.006     Document Type: Article

References (4)

1. Kuroki N. Fuzzy congruences and fuzzy normal subgroups. Information Sciences 60 (1992) 247-259
2. Kuroki N. Rough ideals in semigroups. Information Sciences 100 (1997) 139-163
3. Kuroki N., and Wang P.P. The lower and upper approximations in a fuzzy group. Information Sciences 90 (1996) 203-220
4. Pawlak Z. Rough sets. International Journal of Information and Computer Sciences 11 (1982) 341-356