http://www.cnr.it/ontology/cnr/individuo/prodotto/ID9900
Numerical recovery of location and residue of poles of meromorphic functions (Articolo in rivista)
- Type
- Label
- Numerical recovery of location and residue of poles of meromorphic functions (Articolo in rivista) (literal)
- Anno
- 2011-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s00211-010-0345-0 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- De Micheli Enrico; Viano Giovanni Alberto (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.springerlink.com/content/g8k8783460408802/ (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- athematical Reviews on the web (MathSciNet) (literal)
- ISI Web of Science (WOS) (literal)
- Google Scholar (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Istituto di Biofisica, Consiglio Nazionale delle Ricerche, Genova, Italy
Dipartimento di Fisica, Universita' di Genova, Genova, Italy (literal)
- Titolo
- Numerical recovery of location and residue of poles of meromorphic functions (literal)
- Abstract
- We present amethod able to recover location and residue of poles of functions meromorphic in a half-plane from samples of the function on the real positive semi-axis. The function is assumed to satisfy appropriate asymptotic conditions including, in particular, that required by Carlson's theorem. The peculiar features of the present procedure are: (a) it does not make use of the approximation of meromorphic functions by rational functions; (b) it does not use the standard methods of regularization of ill-posed problems. The data required for the determination of the pole parameters (i.e., location and residue) are the approximate values of the meromorphic function on a finite set of equidistant points on the real positive semi-axis. We show that this method is numerically stable by proving that the algorithm is convergent as the number of data points tends to infinity and the noise on the input data goes to zero. Moreover, we can also evaluate the degree of approximation of the estimates of pole location and residue which we obtain from the knowledge of a finite number of noisy samples. (literal)
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- Autore CNR
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