Abstract:
Conditions for the operator differential equation ˙x=Ax possessing a quadratic first integral (1/2)(Bx,x) to be Hamiltonian are obtained. In the finite-dimensional case, it suffices to require that kerB⊂kerA∗. For a bounded linear mapping x→Ωx possessing a first integral, sufficient conditions for the preservation of the (possibly degenerate) Poisson bracket are obtained.
The work of the first author was supported
by the Russian Foundation for Basic Research
under grant 15-01-03747.
The work of the second author was supported
by the Russian Foundation for Basic Research
under grant 16-01-00706.
Citation:
D. V. Treschev, A. A. Shkalikov, “On the Hamiltonian Property of Linear Dynamical Systems in Hilbert Space”, Mat. Zametki, 101:6 (2017), 911–918; Math. Notes, 101:6 (2017), 1033–1039
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Linking options:
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This publication is cited in the following 12 articles:
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V. V. Kozlov, “Symplectic geometry of the Koopman operator”, Dokl. Math., 104:1 (2021), 175–179
V. V. Kozlov, “Linear Nonautonomous Systems of Differential Equations With a Quadratic Integral”, Differ. Equ., 57:2 (2021), 173–181
V. V. Kozlov, “On the ergodic theory of equations of mathematical physics”, Russ. J. Math. Phys., 28:1 (2021), 73–83
V. V. Kozlov, “Linear system of differential equations with a quadratic invariant as the Schrödinger equation”, Dokl. Math., 103:1 (2021), 39–43
V. V. Kozlov, “Quadratic conservation laws for equations of mathematical physics”, Russian Math. Surveys, 75:3 (2020), 445–494
V. V. Kozlov, “The Liouville Equation as a Hamiltonian System”, Math. Notes, 108:3 (2020), 339–343
V. V. Kozlov, “Tensor invariants and integration of differential equations”, Russian Math. Surveys, 74:1 (2019), 111–140
V. E. Vladykina, A. A. Shkalikov, “Regular Ordinary Differential Operators with Involution”, Math. Notes, 106:5 (2019), 674–687
V. V. Kozlov, “Linear systems with quadratic integral and complete integrability of the Schrödinger equation”, Russian Math. Surveys, 74:5 (2019), 959–961
Valery V. Kozlov, “Linear Hamiltonian Systems: Quadratic Integrals, Singular Subspaces and Stability”, Regul. Chaotic Dyn., 23:1 (2018), 26–46
V. V. Kozlov, “Multi-Hamiltonian property of a linear system with quadratic invariant”, St. Petersburg Mathematical Journal, 30:5 (2019), 877–883