Results 41 to 50 of about 2,304 (162)

Energy preserving evolutions over Bosonic systems [PDF]

Quantum
The exponential convergence to invariant subspaces of quantum Markov semigroups plays a crucial role in quantum information theory. One such example is in bosonic error correction schemes, where dissipation is used to drive states back to the code-space –
Paul Gondolf, Tim Möbus, Cambyse Rouzé
doaj   +1 more source

Инвариантные подпространства в функциональных пространствах полиномиального роста на R^N [PDF]

Проблемы анализа, 1997
Получено описание строения замкнутых линейных подпространств в функциональных топологических векторных пространствах полиномиального роста на евклидовом пространстве R n.
Платонов С. С.
doaj  

Conditional Lie-Bäcklund Symmetries and Reductions of the Nonlinear Diffusion Equations with Source

Abstract and Applied Analysis, 2014
Conditional Lie-Bäcklund symmetry approach is used to study the invariant subspace of the nonlinear diffusion equations with source ut=e−qx(epxP(u)uxm)x+Q(x,u), m≠1.
Junquan Song, Yujian Ye, Danda Zhang, Jun Zhang   +3 more
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Contractions without non-trivial invariant subspaces satisfying a positivity condition

Journal of Inequalities and Applications, 2016
An operator A ∈ B ( H ) $A\in B(\mathcal{H})$ , the algebra of bounded linear transformations on a complex infinite dimensional Hilbert space H $\mathcal{H}$ , belongs to class A ( n ) $\mathcal{A}(n)$ (resp., A ( ∗ − n ) $\mathcal{A}(*-n)$ ) if | A | 2 ≤
Bhaggy Duggal, In Ho Jeon, In Hyoun Kim
doaj   +1 more source

On Some Sampling-Related Frames in U-Invariant Spaces

Abstract and Applied Analysis, 2013
This paper is concerned with the characterization as frames of some sequences in U-invariant spaces of a separable Hilbert space ℋ where U denotes an unitary operator defined on ℋ; besides, the dual frames having the same form are also found.
H. R. Fernández-Morales, A. G. García, M. A. Hernández-Medina, M. J. Muñoz-Bouzo   +3 more
doaj   +1 more source

Инвариантные подпространства в функциональных пространствах медленного роста на световом конусе в R^3 [PDF]

Проблемы анализа, 2011
В функциональных топологических векторных пространствах медленного роста на световом конусе X в R 3 получено полное описание строения всех замкнутых линейных подпространств, инвариантных относительно естественного квазирегулярного представления группы R ⊗
Платонов С. С.
doaj  

On the solvability of a system of wave and beam equations

Abstract and Applied Analysis, 2001
We prove new existence results for linearly coupled system of wave and beam equations. The main concept is the matrix spectrum which is a natural extension of standard definition.
Juha Berkovits
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Ergodicity Breaking Arising from Hilbert Space Fragmentation in Dipole-Conserving Hamiltonians

Physical Review X, 2020
We show that the combination of charge and dipole conservation—characteristic of fracton systems—leads to an extensive fragmentation of the Hilbert space, which, in turn, can lead to a breakdown of thermalization.
Pablo Sala, Tibor Rakovszky, Ruben Verresen, Michael Knap, Frank Pollmann   +4 more
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Static Output Feedback Stabilization using Invariant Subspaces and Sylvester Equations

Trends in Computational and Applied Mathematics, 2009
This paper presents systematic computational algorithms for obtaining the output feedback gain matrix in linear systems stabilization problems. Based on the concept of (C,A,B)-invariant subspaces, introduced previously by the first author, that has ...
E.R.L Villareal, J.A. Ruiz Vargas, E.M. Hemerly   +2 more
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Remarks on Separation of Convex Sets, Fixed-Point Theorem, and Applications in Theory of Linear Operators

Fixed Point Theory and Applications, 2007
Some properties of the linear continuous operator and separation of convex subsets are investigated in this paper and a dual space for a subspace of a reflexive Banach space with a strictly convex norm is constructed.
Soltanov Kamal N
doaj   +2 more sources