Rings in which Every Element Is A Left Zero-Divisor
Yanli REN 1;Yao WANG 2;1. School of Mathematics and Information Technology;Nanjing Xiaozhuang University;Jiangsu 211171;P. R. China;2. School of Mathematics and Statistics;Nanjing University of Information Science and Technology;Jiangsu 210044;P. R. China
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On ζ_s -Quasinormality of 2-Maximal Subgroups
Yufeng LIU 1;;Xiaolong YU 2;Lijun HUO 2 1. School of Mathematical and Information Science;Shandong Institute of Business and Technology;Shandong 264005;P. R. China;2. School of Mathematical Sciences;University of Science and Technology of China;Anhui 230026;P. R. China
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