Ranks of Cross-Commutators and Unitary Module Maps
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DOI: 10.1007/s40315-018-0239-1
Abstract: Let M be an invariant subspace of $$H^2$$H2 over the bi-disk and $$N=H^2\ominus M$$N=H2⊖M. Let $$S_{z,N},S_{w,N}$$Sz,N,Sw,N be the compression of the multiplication operators $$T_z,T_w$$Tz,Tw on $$H^2$$H2 onto N. For a two-variable inner function $$\theta $$θ,… read more here.
Keywords: ranks cross; theta theta; theta; unitary module ... See more keywords