ISSN:
1420-8989
Keywords:
47B35
;
47D25
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mathematics
Notes:
Abstract We characterize when positive operators can be factored by “analytic Toeplitz” type operators. As a corollary, we give an operator theory characterization of those invariant subspaces of doubly commuting unilateral shifts, which are generated by a single inner function on the bidisk. The last result extends to shifts of arbitrary (countable) multiplicity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01191621
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