Normal subgroups of classical groups over Banach algebras
In an earlier paper the author of the paper under review described the subgroups of the general linear group \(GL_ nA\), \(n\geq 3\), over a Banach algebra A with 1 which are normalized by elementary matrices. In the present paper similar results are obtained for unitary groups in the sense of Wall's definition which include symplectic and orthogonal groups.
unitary groups in the sense of Wall's definition
scientific article; zbMATH DE number 4163543