Results 41 to 50 of about 96,721 (176)

The Bargmann type reduction for some Lax integrable two-dimensional generalization of the relativistic Toda lattice

Karpatsʹkì Matematičnì Publìkacìï, 2015
The possibility of applying the method of reducing upon finite-dimensional invariant subspaces, generated by the eigenvalues of the associated spectral problem, to some two-dimensional generalization of the relativistic Toda lattice with the triple ...
O.Ye. Hentosh
doaj   +1 more source

On the structure of semigroups on $L_p$ with a bounded $H{^\infty}$-calculus

, 2014
We show that a bounded analytic semigroup on an $L_p$-space has a bounded $H^{\infty}(\Sigma_{\varphi})$-calculus for some $\varphi < \frac{\pi}{2}$ if and only if the semigroup can be obtained, after restricting to invariant subspaces, factorizing ...
Fackler, Stephan
core   +1 more source

Contractively Embedded Invariant Subspaces [PDF]

, 2019
14 pages. To appear in Operator Theory Advances and Applications (Special volume honoring Joe Ball)
Gorai, Sushil, Sarkar, Jaydeb
openaire   +2 more sources

Synthesizable differentiation-invariant subspaces

Geometric and Functional Analysis, 2019
We describe differentiation-invariant subspaces of $C^\infty(a,b)$ which admit spectral synthesis. This gives a complete answer to a question posed by A.~Aleman and B.~Korenblum. It turns out that this problem is related to a classical problem of approximation by polynomials on the real line.
Baranov, Anton, Belov, Yurii
openaire   +2 more sources

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

Invariant Subspaces and Perturbations [PDF]

Proceedings of the American Mathematical Society, 1992
We study the stability of proper closed invariant subspaces with respect to perturbations in norm of continuous operators on a Hubert space, using a nonlinear C ∞ {C^\infty } map of Banach spaces.
openaire   +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
doaj   +1 more source

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

Analytically invariant and bi-invariant subspaces [PDF]

Transactions of the American Mathematical Society, 1972
The purpose of this paper is to call attention to some interesting weakly closed algebras related to a bounded linear operator T T acting on a Banach space X \mathfrak {X} and their associated lattices of invariant subspaces, namely, the algebras generated by the polynomials and by the rational functions ...
Herrero, Domingo Antonio, Salinas, Norberto   +1 more
openaire   +2 more sources