Norm-decreasing isomorphism on hermitian elements and the group of isometric and invertible multipliers of a Banach algebra
E. Oshobi (1976)
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Displaying similar documents to “W*-algebras on Banach spaces”
Norm-decreasing isomorphism on hermitian elements and the group of isometric and invertible multipliers of a Banach algebra
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Two well-known theorems for Hermitian elements in C*-algebras are extended to Banach algebras. The first concerns the solution of the equation ax - xb = y, and the second gives sharp bounds for the distance between spectra of a and b when a, b are Hermitian.
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