Results 31 to 40 of about 385,913 (283)

Feedback linearization of discrete-time nonlinear control systems: computational aspects [PDF]

open access: yesProceedings of the Estonian Academy of Sciences, 2020
An alternative solution of the static state feedback linearization problem for the discrete-time case is given. This solution is based on the sequence of distributions, whose computation requires only the knowledge of the backward shift equations.
Tanel Mullari, Ülle Kotta
doaj   +1 more source

Hypercyclicity of adjoint of convex weighted shift and multiplication operators on Hilbert spaces [PDF]

open access: yesMathematics and Computational Sciences, 2021
A bounded linear operator $T$ on a Hilbert space $\mathfrak{H}$ is convex, if $$\|\mathfrak{T}^{2}v\|^2-2\|\mathfrak{T}v\|^2+\|v\|^2 \geq 0.$$ In this paper, sufficient conditions to hypercyclicity of adjoint of unilateral (bilateral) forward (backward ...
Lotfollah Karimi
doaj   +1 more source

The Kitai criterion and backward shifts [PDF]

open access: yesProceedings of the American Mathematical Society, 2008
It is proved that for any separable infinite dimensional Banach space $X$, there is a bounded linear operator $T$ on $X$ such that $T$ satisfies the Kitai Criterion. The proof is based on quasisimilarity argument and on showing that $I+T$ satisfies the Kitai Criterion for certain backward weighted shifts $T$.
openaire   +3 more sources

The Spectrum of Mapping Ideals of Type Variable Exponent Function Space of Complex Variables with Some Applications

open access: yesJournal of Function Spaces, 2021
The topological and geometric behaviors of the variable exponent formal power series space, as well as the prequasi-ideal construction by s-numbers and this function space of complex variables, are investigated in this article. Upper bounds for s-numbers
Awad A. Bakery, Mustafa M. Mohammed
doaj   +1 more source

Backward position shift in apparent motion

open access: yesJournal of Vision, 2014
We investigated the perceived position of visual targets in apparent motion. A disc moved horizontally through three positions from -10° to +10° in the far periphery (20° above fixation), generating a compelling impression of apparent motion. In the first experiment, observers compared the position of the middle of the three discs to a subsequently ...
H.-H. Li, W. M. Shim, P. Cavanagh
openaire   +2 more sources

KMS states on C*-algebras associated to local homeomorphisms [PDF]

open access: yes, 2014
For every Hilbert bimodule over a C*-algebra, there are natural gauge actions of the circle on the associated Toeplitz algebra and Cuntz-Pimsner algebra, and hence natural dynamics obtained by lifting these gauge actions to actions of the real line.
Afsar, Zahra   +2 more
core   +1 more source

Doppler-Based Acoustic Gyrator

open access: yesApplied Sciences, 2018
Non-reciprocal phase shifters have been attracting a great deal of attention due to their important applications in filtering, isolation, modulation, and mode locking.
Farzad Zangeneh-Nejad, Romain Fleury
doaj   +1 more source

An Improved and Secure RFID Group Tag Ownership Transfer Protocol [PDF]

open access: yesJisuanji gongcheng, 2019
Aiming at the security issues such as backward privacy leakage and violent cracking in the existing Radio Frequency Identification(RFID) group label ownership transfer protocol,an improved ownership transfer protocol is proposed.The word randomization ...
YIN Shoujun
doaj   +1 more source

Cyclic vectors for backward hyponormal weighted shifts [PDF]

open access: yesProceedings of the American Mathematical Society, 1986
A unilateral weighted shift T T on a Hilbert space H H is an operator such that T e n = w n e n + 1
openaire   +1 more source

Backward shift invariant subspaces in reproducing kernel Hilbert spaces [PDF]

open access: yesMATHEMATICA SCANDINAVICA, 2020
In this note, we describe the backward shift invariant subspaces for an abstract class of reproducing kernel Hilbert spaces. Our main result is inspired by a result of Sarason concerning de Branges-Rovnyak spaces (the non-extreme case). Furthermore, we give new applications in the context of the range space of co-analytic Toeplitz operators and sub ...
Fricain, Emmanuel   +2 more
openaire   +3 more sources

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