%0 Journal Article
%T On normal, formally normal and quasinormal composition operators in $\ell^2$-spaces
%A Piotr Budzynski
%J Mathematics
%D 2014
%I arXiv
%X 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 of this kind are characterized.
%U http://arxiv.org/abs/1408.3256v1