2008/08/02 by Chao You, Changhui Wang, You, Chao +3
Computer Science · Mathematics · #15A06 #15A09 (Primary) 46L08 (Secondary) #16W10 #Advanced Topics in Algebra #Algebraic and Geometric Analysis #FOS: Mathematics #Matrix Theory and Algorithms #Operator Algebras (math.OA) #Rings and Algebras (math.RA)
paper · pdf · doi:10.48550/arxiv.0808.0265
openalex publication_date 2008/08/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In [Q. Xu et al., The solutions to some operator equations, Linear Algebra Appl.(2008), doi:10.1016/j.laa.2008.05.034], Xu et al. provided the necessary and sufficient conditions for the existence of a solution to the equation AXB^*-BX^*A^*=C in the general setting of the adjointable operators between Hilbert C^*-modules. Based on the generalized inverses, they also obtained the general expression of the solution in the solvable case. In this paper, we generalize their work in the more general setting of ring R with involution * and reobtain results for rectangular matrices and operators between Hilbert C^*-modules by embedding the "rectangles" into rings of square matrices or rings of operators acting on the same space.