Bao, Yue; Wu, Congxin On convexity and strict convexity of fuzzy mappings. (Chinese. English summary) Zbl 1174.90913 J. Harbin Inst. Technol. 39, No. 4, 639-641 (2007). MSC: 90C70 03E72 52A41 PDFBibTeX XMLCite \textit{Y. Bao} and \textit{C. Wu}, J. Harbin Inst. Technol. 39, No. 4, 639--641 (2007; Zbl 1174.90913)
Ren, Shijun; Hong, Bingrong; Liang, Qingzi A point positioning algorithm to determine whether convex regions bounded by multiple linear constraints are empty. (Chinese. English summary) Zbl 1087.90521 J. Harbin Inst. Technol. 32, No. 2, 121-124 (2000). MSC: 90C08 52A41 PDFBibTeX XMLCite \textit{S. Ren} et al., J. Harbin Inst. Technol. 32, No. 2, 121--124 (2000; Zbl 1087.90521)