Results 301 to 310 of about 220,925 (331)

Backward shift invariant spaces in H^2

Indiana University Mathematics Journal, 1997
If \(b\in B(H^\infty)\), the unit ball of \(H^\infty\), then the de Branges-Rovnyak space \({\mathcal H}(b)\) is a Hilbert space contained contractively in \(H^2\) that is invariant by the backward shift operator \(S^*\). When \(b\) is an inner function the invariant subspaces of \({\mathcal H}(b)\) are given by Beurling's theorem and when \(b\) is not
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Nearly invariant and the backward shift

2009
For a \( \mathbb{D} \) function ϑ, form the subspace $$ K_{z\vartheta } : = H^2 \left( \mathbb{D} \right) \cap (z\vartheta H^2 (\mathbb{D}))^ \bot $$ Since z ϑ H2 \( \left( \mathbb{D} \right) \) is an S-invariant subspace of H2\( \left( \mathbb{D} \right) \), then Kzϑ will be an S*-invariant subspace of H2\( \left( \mathbb{D} \right) \), where
Alexandru Aleman, William T. Ross, Nathan S. Feldman   +2 more
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The Backward Shift on Hp

2005
z on the classical Hardy space H. Though there are many aspects of this operator worthy of study [20], we will focus on the description of its invariant subspaces by which we mean the closed linear manifolds E ⊂ H for which BE ⊂ E . When 1 1 case involves heavy use of duality and especially the Hahn-Banach separation theorem where one gets at E by ...
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The unilateral backward shift is w-quasisubscalar

Integral Equations and Operator Theory, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Forward versus backward shift

Applied Ergonomics, 1991
J. Duchon, J. Wagner, C. Keran
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Backwards Doppler shifts

Nature Photonics, 2011
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The backward shift

2020
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Nearly Invariant Subspaces of the Backward Shift

1988
A theorem of D. Hitt describing certain subspaces of H2 that miss by one dimension being invariant under the backward shift operator is given a new approach and extended.
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Relativistic Heavy-Neighbor-Atom Effects on NMR Shifts: Concepts and Trends Across the Periodic Table

Chemical Reviews, 2020
Jan Vícha, Jan Novotny, Stanislav Komorovsky   +2 more
exaly  

Cancer epigenetics in clinical practice

Ca-A Cancer Journal for Clinicians, 2023
Veronica Davalos, Manel Esteller
exaly