Li, Dongya; Zhang, Chengyi Fuzzy \(k\)-ideals in semirings redefined. (English) Zbl 1010.16049 Chin. Q. J. Math. 17, No. 3, 93-97 (2002). MSC: 16Y60 16D25 03E72 PDFBibTeX XMLCite \textit{D. Li} and \textit{C. Zhang}, Chin. Q. J. Math. 17, No. 3, 93--97 (2002; Zbl 1010.16049)
Zhang, Chengyi; Hu, Liping; Dang, Pingan On the equal-height elements of the fuzzy subgroups. (English) Zbl 0987.20049 Chin. Q. J. Math. 16, No. 2, 82-85 (2001). MSC: 20N25 PDFBibTeX XMLCite \textit{C. Zhang} et al., Chin. Q. J. Math. 16, No. 2, 82--85 (2001; Zbl 0987.20049)
Zhang, Chengyi; Dang, Ping’an The pointwise characterizations of fuzzy mappings and fuzzy cardinal numbers. (English) Zbl 0969.03067 Chin. Q. J. Math. 14, No. 1, 78-81 (1999). MSC: 03E72 PDFBibTeX XMLCite \textit{C. Zhang} and \textit{P. Dang}, Chin. Q. J. Math. 14, No. 1, 78--81 (1999; Zbl 0969.03067)
Zhang, Chengyi The pointwise characterization of fuzzy ideals and fuzzy prime ideals. (English) Zbl 0910.16031 Chin. Q. J. Math. 12, No. 1, 79-85 (1997). MSC: 16Y99 16D25 PDFBibTeX XMLCite \textit{C. Zhang}, Chin. Q. J. Math. 12, No. 1, 79--85 (1997; Zbl 0910.16031)