%0 Journal Article
%T Bi-isometries and commutant lifting
%A H. Bercovici
%A R. G. Douglas
%A C. Foias
%J Mathematics
%D 2008
%I arXiv
%X A new functional model for pairs of commuting isometries is described. Intertwining operators between such models are then studied in order to approach the classification of invariant subspaces of such pairs.
%U http://arxiv.org/abs/0805.3832v1