Xu, Mang; Yu, Bingjun A note on the greatest idempotent-separating congruence and group congruences on a weakly inverse semigroup. (Chinese. English summary) Zbl 1006.20047 J. Sichuan Norm. Univ., Nat. Sci. 25, No. 2, 137-138 (2002). MSC: 20M18 08A30 PDFBibTeX XMLCite \textit{M. Xu} and \textit{B. Yu}, J. Sichuan Norm. Univ., Nat. Sci. 25, No. 2, 137--138 (2002; Zbl 1006.20047)
Yu, Bingjun; Zhu, Jinhua; Xu, Mang Varieties of \((2,1)\)-algebras and their free objects. (Chinese. English summary) Zbl 1003.08002 J. Sichuan Norm. Univ., Nat. Sci. 25, No. 1, 7-10 (2002). MSC: 08B20 20M05 20M07 PDFBibTeX XMLCite \textit{B. Yu} et al., J. Sichuan Norm. Univ., Nat. Sci. 25, No. 1, 7--10 (2002; Zbl 1003.08002)
Xu, Mang; Yu, Bingjun \(E\)-unitary cover of an inverse semigroup over a given group. (Chinese. English summary) Zbl 0980.20062 J. Sichuan Norm. Univ., Nat. Sci. 24, No. 2, 124-127 (2001). MSC: 20M18 PDFBibTeX XMLCite \textit{M. Xu} and \textit{B. Yu}, J. Sichuan Norm. Univ., Nat. Sci. 24, No. 2, 124--127 (2001; Zbl 0980.20062)
Xu, Mang; Yu, Bingjun On the regularity of the binary relation semigroup \({\mathcal B}_{\{1,2\}}\). (Chinese. English summary) Zbl 0971.20043 J. Sichuan Norm. Univ., Nat. Sci. 23, No. 5, 469-470 (2000). MSC: 20M20 20M30 PDFBibTeX XMLCite \textit{M. Xu} and \textit{B. Yu}, J. Sichuan Norm. Univ., Nat. Sci. 23, No. 5, 469--470 (2000; Zbl 0971.20043)
Ren, Mengzhang; Xu, Mang A sufficient condition on embedding semigroups in groups. (Chinese. English summary) Zbl 0968.20031 J. Sichuan Norm. Univ., Nat. Sci. 23, No. 4, 356-357 (2000). MSC: 20M10 PDFBibTeX XMLCite \textit{M. Ren} and \textit{M. Xu}, J. Sichuan Norm. Univ., Nat. Sci. 23, No. 4, 356--357 (2000; Zbl 0968.20031)
Xu, Mang; Yu, Bingjun The subrings and the subring lattice of the rational field. (Chinese. English summary) Zbl 1045.06501 J. Sichuan Norm. Univ., Nat. Sci. 23, No. 1, 14-16 (2000). MSC: 06B23 13A99 PDFBibTeX XMLCite \textit{M. Xu} and \textit{B. Yu}, J. Sichuan Norm. Univ., Nat. Sci. 23, No. 1, 14--16 (2000; Zbl 1045.06501)
Yang, Xiande; Xu, Mang A note on the number of one-sided inverse elements of transformations or maps on sets. (Chinese. English summary) Zbl 0961.20054 J. Sichuan Norm. Univ., Nat. Sci. 23, No. 3, 230-231 (2000). MSC: 20M20 PDFBibTeX XMLCite \textit{X. Yang} and \textit{M. Xu}, J. Sichuan Norm. Univ., Nat. Sci. 23, No. 3, 230--231 (2000; Zbl 0961.20054)