P. Budzyński

activity

20112025

most citedOn Unbounded Composition Operators in

L^{2}

-Spaces

24 citations · 49 across the 17 of their papers we have counts for

collaborators

Showing 2014 · math.FAShow all

3 papers · 2 filters

math.FA2014

Subnormal weighted shifts on directed trees whose nth powers have trivial domain

Piotr Budzynski, Zenon Jan Jablonski, Il Bong Jung +1

It is shown that for any positive integer n there exists a subnormal weighted shift on a directed tree whose nth power is closed and densely defined while its (n + 1)th power has t…

math.FA2014★ 2 cited

Dense definiteness and boundedness of composition operators in $L^{2}$ -spaces via inductive limits

Piotr Budzynski, Artur Planeta

The questions of dense definiteness and boundedness of composition operators in $L^{2}$ -spaces are studied by means of inductive limits of operators. Methods based on projective syst…

math.FA2014

On normal, formally normal and quasinormal composition operators in $ℓ^{2}$ -spaces

Piotr Budzynski

Unbounded composition operators in $L^{2}$ -space over discrete measure spaces are investigated. Normal, formally normal and quasinormal composition operators acting in $L^{2}$ -spaces o…

Subnormal weighted shifts on directed trees whose nth powers have trivial domain

Dense definiteness and boundedness of composition operators in L2-spaces via inductive limits

On normal, formally normal and quasinormal composition operators in ℓ2-spaces

Dense definiteness and boundedness of composition operators in $L^{2}$ -spaces via inductive limits

On normal, formally normal and quasinormal composition operators in $ℓ^{2}$ -spaces