Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4590665 | Journal of Functional Analysis | 2012 | 14 Pages |
Abstract
We show how multicentric representation of functions provides a simple way to generalize the von Neumann result that the unit disc is a spectral set for contractions in Hilbert spaces. In particular the sets need not be connected and the results can be applied to bounding Riesz spectral projections.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory