A new systems theory perspective on canonical Wiener-Hopf factorization on the unit circle
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866911172556488704 |
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| author | ter Horst, Sanne Kurula, Mikael Ran, André |
| author_facet | ter Horst, Sanne Kurula, Mikael Ran, André |
| contents | We establish left and right canonical factorizations of Hilbert-space operator-valued functions G(z) that are analytic on neighborhoods of the complex unit circle and the origin 0, and that have the form G(z)=I+F(z) with F(z) taking strictly contractive values on the unit circle. Such functions can be realized as transfer functions of infinite dimensional dichotomous discrete-time linear systems, and we employ the strict bounded real lemma for this class of systems, together with associated Krein space theory, to derive explicit formulas for the left and right canonical factorizations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_17324 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A new systems theory perspective on canonical Wiener-Hopf factorization on the unit circle ter Horst, Sanne Kurula, Mikael Ran, André Functional Analysis Primary 47A68, Secondary 47A63, 47A48, 47A56, 93B28, 93C05, 93D25 We establish left and right canonical factorizations of Hilbert-space operator-valued functions G(z) that are analytic on neighborhoods of the complex unit circle and the origin 0, and that have the form G(z)=I+F(z) with F(z) taking strictly contractive values on the unit circle. Such functions can be realized as transfer functions of infinite dimensional dichotomous discrete-time linear systems, and we employ the strict bounded real lemma for this class of systems, together with associated Krein space theory, to derive explicit formulas for the left and right canonical factorizations. |
| title | A new systems theory perspective on canonical Wiener-Hopf factorization on the unit circle |
| topic | Functional Analysis Primary 47A68, Secondary 47A63, 47A48, 47A56, 93B28, 93C05, 93D25 |
| url | https://arxiv.org/abs/2409.17324 |