Konstantinos Bampouras

collaborators

3 papers

math.FA2026

Recovering Product BMO from Schatten Hankel operators

Konstantinos Bampouras, Karl-Mikael Perfekt

We prove that if a small Hankel operator on the product Hardy space belongs to some Schatten class $S^{p}$ , $p < \infty$ , then it has a symbol in product BMO. In other words, the con…

math.FA2025

Nehari's Theorem and Hardy's inequality for Paley--Wiener spaces

Konstantinos Bampouras

Recently it was proven that for a convex subset of $R^{n}$ that has infinitely many extreme vectors, the Nehari theorem fails, that is, there exists a bounded Hankel opera…

math.CV2025

Inner Functions, Möbius Distortion and Angular Derivatives

Konstantinos Bampouras, Artur Nicolau

We prove that an inner function has finite $L (p)$ -entropy if and only if its accumulated Möbius distortion is in $L^{p}$ , $0 < p < \infty$ . We also study the support of the po…