Affiliation:
1. School of Mathematics , Yangzhou University , Yangzhou , 225002 P. R. China
Abstract
Abstract
This paper mainly gives some sufficient and necessary conditions for an element in a ring to be
EP
{\mathrm{EP}}
, partial isometry and strongly
EP
{\mathrm{EP}}
by some equalities, using the solutions of certain equations and constructing the invertible elements in a ring.
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