English

Group inverse for anti-triangular block operator matrices

Rings and Algebras 2022-03-18 v1

Abstract

We present the existence of the group inverse and its representation for the block operator matrix (EIF0)\left( \begin{array}{cc} E&I\\ F&0 \end{array} \right) under the condition FEFπ=0FEF^{\pi}=0. The group inverse for the anti-triangular block matrices with two identical subblocks under the same condition is thereby investigated. These extend the results of Zou, Chen and Mosi\'c (Studia Scient. Math. Hungar., 54(2017), 489--508), and Cao, Zhang and Ge (J. Appl. Math. Comput., 46(2014), 169--179).

Keywords

Cite

@article{arxiv.2203.09086,
  title  = {Group inverse for anti-triangular block operator matrices},
  author = {Huanyin Chen and Marjan Sheibani},
  journal= {arXiv preprint arXiv:2203.09086},
  year   = {2022}
}
R2 v1 2026-06-24T10:16:38.611Z