| 6 | Characterizations for the Core Invertibility and EP-ness Involving Projections显示文摘In this paper we obtain some equivalent conditions for the core invertibility and EP-ness of 1−pq,1−pqp,p−pq and p−q,where p,q are projections in different settings,such as∗-rings,∗-reducing rings and C∗-algebras.Moreover,several representations for the core inverses of product,difference and sum of two generalized projections are derived.In particular,a number of examples are given to illustrate our results. | Honglin Zou Dragana Cvetković-Ilić Jianlong Chen Kezheng Zuo | 2022 | Algebra Colloquium2022，29，3： | 0 |
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