Multicentric calculus and the Riesz projection
In multicentric holomorphic calculus one represents the function ? using a new polynomial variable \(w = p(z)\) in such a way that when evaluated at the operator \(p(A)\) is small in norm. Here it is assumed that \(p\) has distinct roots. In this paper we discuss two related problems, separating a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Publishing House of the Romanian Academy
2015-12-01
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| Series: | Journal of Numerical Analysis and Approximation Theory |
| Subjects: | |
| Online Access: | https://ictp.acad.ro/jnaat/journal/article/view/1064 |