Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4623194 | Journal of Mathematical Analysis and Applications | 2007 | 11 Pages |
Abstract
We are in progress of extending the family of ‘q-deformed operators’ considered in the previous papers by joining to them q-subnormal as well as q-formally subnormal ones. It turns out that q-positive definiteness, a notion generalizing Halmos' standard positive definiteness of bounded subnormal operators, is likewise central for our new scheme.
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