J. Virtanen

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math.FA2025

Volterra-type inner derivations on Hardy spaces

H. Arroussi, C. Tong, J. A. Virtanen +1

A classical result of Calkin [Ann. of Math. (2) 42 (1941), pp. 839-873] says that an inner derivation $S \mapsto [T, S] = T S - S T$ maps the algebra of bounded operators on a Hilbert sp…

math.FA2024

Schatten class Hankel operators on doubling Fock spaces and the Berger-Coburn phenomenon

Ghazaleh Asghari, Jani A. Virtanen, Zhangjian Hu

Using the notion of integral distance to analytic functions, we give a characterization of Schatten class Hankel operators acting on doubling Fock spaces on the complex plane and u…