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Design of Packet-Based Block Codes with Shift Operators [PDF]

open access: goldEURASIP Journal on Wireless Communications and Networking, 2010
This paper introduces packet-oriented block codes for the recovery of lost packets and the correction of an erroneous single packet. Specifically, a family of systematic codes is proposed, based on a Vandermonde matrix applied to a group of ...
Ilow Jacek, Al-Shaikhi Ali
doaj   +4 more sources

Shift operators from the simplex representation in momentum-space CFT [PDF]

open access: yesJournal of High Energy Physics, 2023
We derive parametric integral representations for the general n-point function of scalar operators in momentum-space conformal field theory. Recently, this was shown to be expressible as a generalised Feynman integral with the topology of an (n − 1 ...
Francesca Caloro, Paul McFadden
doaj   +2 more sources

Hypercyclic Generalized Shift Operators [PDF]

open access: yesComplex Analysis and Operator Theory, 2022
In this paper, we study linear dynamical properties of shift operators on some classes of Segal algebras. Moreover, we characterize hypercyclic generalized bilateral shift operators on the standard Hilbert module.
S. Ivković, S. M. Tabatabaie
semanticscholar   +3 more sources

Lectures on the shift operator [PDF]

open access: bronzeJournal of Soviet Mathematics, 1977
This is the continuation of the papers I-III published in Vols. 39, 47, and 56 of the same “Zapiski.” One considers the shift operator f → zf in the spaces of (generalized) functions on the circumference T and their spectral subspaces. If X is such a space and e⊂T, then Open image in new window .
Н. К. Никольский
openalex   +11 more sources

On the shift operators

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1996
The purpose of this paper is to show that the weighted s-shift operators and so the weighted shift and the right shift operators have the SVEP, but the left shift operator has not.
M. M. Aggour
doaj   +3 more sources

The Spectral Shift Operator [PDF]

open access: green, 1999
LaTeX, 28 ...
Fritz Gesztesy   +2 more
openalex   +4 more sources

Multivariate shift invariant operators

open access: bronzeJournal of Mathematical Analysis and Applications, 1986
In the paper of \textit{G. Rota}, \textit{D. Kahaner} and \textit{A. Odlyzko} [J. Math. Anal. Appl. 42, 685-760 (1973)], a connection between the shift invariant operator and the Sheffer type set is given. The author considers multivariate analogues of the delta operator, the basis polynomials and the Sheffer set of polynomials.
Saumya Singh, Sudha Asthana
openalex   +3 more sources

Perturbations of the shift operator [PDF]

open access: bronzeTransactions of the American Mathematical Society, 1965
Jim Freeman
openalex   +2 more sources

HYPERCYCLIC OPERATOR WEIGHTED SHIFTS [PDF]

open access: bronzeBulletin of the Korean Mathematical Society, 2004
A bounded linear operator \(T\) on a Hilbert space \(H\) is said to be hypercyclic if, for some \(x \in H\), the orbit \(\{T^{n}x : n=0,1,2,\dots \}\) is dense in \(H\). In the paper under review, the authors give a characterization for hypercyclicity of a bilateral operator weighted shift \(T\) on the Hilbert space \(L^{2}(K)\).
Munmun Hazarika, S. C. Arora
openalex   +5 more sources

Operators Commuting with a Weighted Shift [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1969
Ralph Gellar
openalex   +4 more sources

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