EP Elements in Rings and in Semigroups with Involution and in C*-algebras
Serdica Mathematical Journal, Tome 41 (2015) no. 1, pp. 83-116.

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This work includes a survey of most of the results concerning EP elements in semigroups and rings with involution and in C*-algebras. 2010 Mathematics Subject Classification: Primary 46L05, 46J05, 46H05, 46H30, 47A05, 47A53, 47A60, 15A09, 15A33, 16A28, 16A32, 16B99,16W10; Secondary 46E25,46K05, 47A12, 47A68.
Keywords: EP operator, EP element, involution, strong involution, semigroup with involution, ring with involution, regular ring, antiregular ring, *-regular ring, faithful ring, C*-algebra, group inverse, Drazin inverse, generalized inverse, Moore-Penrose inverse, regular element, antiregular element, polar element, quasipolar element, global star cancelation law, annihilator
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     author = {Karanasios, Sotirios},
     title = {EP {Elements} in {Rings} and in {Semigroups} with {Involution} and in {C*-algebras}},
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Karanasios, Sotirios. EP Elements in Rings and in Semigroups with Involution and in C*-algebras. Serdica Mathematical Journal, Tome 41 (2015) no. 1, pp. 83-116. http://geodesic.mathdoc.fr/item/SMJ2_2015_41_1_a5/