Abstract
LetA be a matrix over a complex commutative unital Banach algebra. We give necessary and sufficient conditions forA to have a generalized inverse. Moreover, if the Banach algebra has a symmetric involution, these are also necessary and sufficient conditions forA to admit the Moore-Penrose inverse.
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Partially supported by NSF Grant DMS-8802593
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Huang, D. Generalized inverses over Banach algebras. Integr equ oper theory 15, 454–469 (1992). https://doi.org/10.1007/BF01200329
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DOI: https://doi.org/10.1007/BF01200329