Czechoslovak Mathematical Journal, first online, pp. 1-13
Characterizations of partial isometries and two special kinds of EP elements
Ruju Zhao, Hua Yao, Junchao Wei
Received August 26, 2018. Published online December 12, 2019.
Abstract: We give some sufficient and necessary conditions for an element in a ring to be an EP element, partial isometry, normal EP element and strongly EP element by using solutions of certain equations.
Keywords: EP element; partial isometry; normal EP element; strongly EP element; solutions of equation