The Moore--Penrose inverse of differences and products of projectors in a ring with involution
Huihui Zhu, Jianlong Chen, Pedro Henrique de Bitencourt Patricio · TURKISH JOURNAL OF MATHEMATICS · 2016
In this paper, we study the Moore-Penrose inverses of differences and products of projectors in a ring with involution. Some necessary and sufficient conditions for the existence of the Moore-Penrose inverse are given. Moreover, the expressions of the Moore-Penrose inverses of differences and products of projectors are presented.