Hermitian harmonic maps.
Loubeau, Eric (1999)
Beiträge zur Algebra und Geometrie
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Displaying similar documents to “Harmonic functions operating in Hermitian Banach algebras.”
Hermitian harmonic maps.
Perturbation theorems for Hermitian elements in Banach algebras
Rajendra Bhatia, Driss Drissi (1999)
Studia Mathematica
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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.
Banach algebras with involution
Pták, V.
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Re-establishing supersymmetry between harmonic oscillators in dimensions
Znojil, Miloslav
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The Shirali-Ford theorem as a consequence of Ptak theory for hermitian Banach algebras
Maria Fragoulopoulou (2002)
Studia Mathematica
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A simple application of Pták theory for hermitian Banach algebras, combined with a result on normed Q-algebras, gives a non-technical new proof of the Shirali-Ford theorem. A version of this theorem in the setting of non-normed topological algebras is also provided.
Continuity of the spectrum of norm-normal matrices
Michal Zajac (1978)
Mathematica Slovaca
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