Results 31 to 40 of about 2,304 (162)
Flows in Infinite-Dimensional Phase Space Equipped with a Finitely-Additive Invariant Measure
Mathematics, 2023 Finitely-additive measures invariant to the action of some groups on a separable infinitedimensional real Hilbert space are constructed. The invariantness of a measure is studied with respect to the group of shifts on a vector of Hilbert space, the ...
Vsevolod Zh. Sakbaev
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Certain invariant subspaces for operators with rich eigenvalues
International Journal of Mathematics and Mathematical Sciences, 1991 For a connected open subset Ω of the plane and n a positive integer, let Bn(Ω) be the space introduced by Cowen and Douglas. In this article we study the spectrum of restrictions of T in order to obtain more information about the invariant subspaces of T.
Karim Seddighi
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Some remarks on the invariant subspace problem for hyponormal operators
International Journal of Mathematics and Mathematical Sciences, 2001 We make some remarks concerning the invariant subspace problem for hyponormal operators. In particular, we bring together various hypotheses that must hold for a hyponormal operator without nontrivial invariant subspaces, and we discuss the existence of ...
Vasile Lauric
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Perturbation of Invariant Subspaces
Journal of Mathematical Analysis and Applications, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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A note on invariant subspaces.
Michigan Mathematical Journal, 1970 For the review see the scanned page Addendum: The author points out in a note added in proof, that the second theorem was proved by \textit{K.-H. Körber} [Math. Ann. 182, 95--103 (1969; Zbl 0181.14002)]
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Operadores uniformemente estables y subespacios invariantes
Revista Bases de la Ciencia, 2019 Este trabajo estudia operadores uniformemente estables sobre espacios de Banach en general, con el propósito de caracterizar algunos que tengan subespacios invariantes no triviales.
Edixo Rosales
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On pole placement and invariant subspaces [PDF]
2013 XXIV International Conference on Information, Communication and Automation Technologies (ICAT), 2013 The classical eigenvalue assignment problem is revisited in this note. We derive an analytic expression for pole placement which represents a slight generalization of the celebrated Bass-Gura and Ackermann formulae, and also is closely related to the modal procedure of Simon and Mitter.
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Operator equations and invariant subspaces
Le Matematiche, 1994 Banach space operators acting on some fixed space X are considered. If two such operators A and B verify the condition A2=B2 and if A has nontrivial hyperinvariant subspaces, then B has nontrivial invariant subspaces.
Valentin Matache
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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
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Invariant Subspace Decomposition
J. Mach. Learn. Res.ISSN:1532 ...
Lazzaretto, Margherita +2 more
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