Geodesic
Characterizations of partial isometries and two special kinds of EP elements
Czechoslovak Mathematical Journal, Tome 70 (2020) no. 2, pp. 539-551.

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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.
DOI : 10.21136/CMJ.2019.0389-18
Classification : 15A09, 16U99, 16W10
Keywords: EP element; partial isometry; normal EP element; strongly EP element; solutions of equation 
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Zhao, Ruju; Yao, Hua; Wei, Junchao. Characterizations of partial isometries and two special kinds of EP elements. Czechoslovak Mathematical Journal, Tome 70 (2020) no. 2, pp. 539-551. doi : 10.21136/CMJ.2019.0389-18. http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2019.0389-18/

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