3 papers
math.FA2026
Local Reflexivity and Duality for Subspace Approximation Schemes
Daniel Akech Thiong
We address a structural gap in the quantitative theory of operator approximation by investigating how subspace approximation schemes interact with local reflexivity. Recent literat…
math.FA2023
Approximation spaces for H-operators
Asuman Güven Aksoy, Daniel Akech Thiong
This paper defines and establishes relations among approximation spaces of certain operators called \textit{H-operators}, which generalize the notion of self-adjoint to Banach spac…
math.FA2023
Equality in Degrees of Compactness: Schauder's Theorem and s-numbers
Asuman Güven Aksoy, Daniel Akech Thiong
We investigate an extension of Schauder's theorem by studying the relationship between various -numbers of an operator and its adjoint . We have three main results. Fir…