The two-by-two spectral Nevanlinna-Pick problem
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- by Jim Agler and N. J. Young PDF
- Trans. Amer. Math. Soc. 356 (2004), 573-585 Request permission
Abstract:
We give a criterion for the existence of an analytic $2 \times 2$ matrix-valued function on the disc satisfying a finite set of interpolation conditions and having spectral radius bounded by $1$. We also give a realization theorem for analytic functions from the disc to the symmetrised bidisc.References
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Additional Information
- Jim Agler
- Affiliation: Department of Mathematics, University of California at San Diego, La Jolla, California 92093
- MR Author ID: 216240
- N. J. Young
- Affiliation: School of Mathematics and Statistics, University of Newcastle upon Tyne, Merz Court, Newcastle upon Tyne NE1 7RU, England
- Received by editor(s): October 9, 2001
- Received by editor(s) in revised form: February 26, 2002
- Published electronically: September 22, 2003
- Additional Notes: This research was supported by an NSF grant in Modern Analysis and an EPSRC Visiting Fellowship
- © Copyright 2003 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 356 (2004), 573-585
- MSC (2000): Primary 30E05
- DOI: https://doi.org/10.1090/S0002-9947-03-03083-6
- MathSciNet review: 2022711