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math.FA2026
Finite-Branch Multipliers on a Hölder Algebra: Commutants, Norm Closures, and Essential Spectra
Hülya Duru, Serkan İlter, Arkady Kitover
Noninjective multiplication symbols allow commuting operators to mix function values along their fibers, while Hölder regularity constrains this mixing at branch points. We study t…
math.FA2018
Pre-Markov Operators
Hülya Duru, Serkan Ilter
A positive linear operator between two unital -algebras, with point separating order duals, and is called a Markov operator for which …