In this paper,we mainly give characterizations of EP elements in terms of equations.In addition,a related notion named a central EP element is defined and investigated.Finally,we focus on characterizations of a genera...In this paper,we mainly give characterizations of EP elements in terms of equations.In addition,a related notion named a central EP element is defined and investigated.Finally,we focus on characterizations of a generalized EP element,i.e.,+-DMP element.展开更多
基金The research was supported by the Ministry of Education,Science and Technological Development(grant no.174007)Republic of Serbia,and by NSF of China(11901510)+1 种基金NSF of Jiangsu Province of China(BK20170589)China Postdoctoral Science Foundation Funded Project(2017M611920).
文摘In this paper,we mainly give characterizations of EP elements in terms of equations.In addition,a related notion named a central EP element is defined and investigated.Finally,we focus on characterizations of a generalized EP element,i.e.,+-DMP element.