Abstract
We consider linear operators lying in the orthogonal group of a quadratic form and study those spectral properties of such operators that can be expressed in terms of the signature of this form. We show that in the typical case these transformations are symplectic. Some of the results can be extended to the general case when the operator admits a homogeneous form of degree ≥3.
Similar content being viewed by others
References
V. A. Yakubovich and V. M. Starzhinskii, Linear Differential Equations with Periodic Coefficients (Nauka, Moscow, 1972; Wiley, New York, 1975).
J. Williamson, “On the Algebraic Problem Concerning the Normal Forms of Linear Dynamical Systems,” Am. J. Math. 58(1), 141–163 (1936).
V. V. Kozlov, “Linear Systems with a Quadratic Integral,” Prikl. Mat. Mekh. 56(6), 900–906 (1992) [Appl. Math. Mech. 56, 803–809 (1992)].
V. N. Rubanovskii, “On Bifurcation and Stability of Stationary Motions in Certain Problems of Dynamics of a Solid Body,” Prikl. Mat. Mekh. 38(4), 616–627 (1974) [Appl. Math. Mech. 38, 573–584 (1974)].
G. Frobenius, “Über lineare Substitutionen und bilineare Formen,” J. Math. 84, 1–63 (1878).
L. S. Pontryagin, “Hermitian Operators in Spaces with Indefinite Metric,” Izv. Akad. Nauk SSSR, Ser. Mat. 8(6), 243–280 (1944).
D. Carlson and H. Schneider, “Inertia Theorems for Matrices: The Semidefinite Case,” J. Math. Anal. Appl. 6, 430–446 (1963).
H. K. Wimmer, “Inertia Theorems for Matrices, Controllability, and Linear Vibrations,” Linear Algebra Appl. 8, 337–343 (1974).
V. I. Arnol’d, “Conditions for Nonlinear Stability of Stationary Plane Curvilinear Flows of an Ideal Fluid,” Dokl. Akad. Nauk SSSR 162(5), 975–978 (1965) [Sov. Math., Dokl. 6, 773–777 (1965)].
O. Taussky, “A Generalization of a Theorem of Lyapunov,” J. Soc. Ind. Appl. Math. 9, 640–643 (1961).
A. Ostrowski and H. Schneider, “Some Theorems on the Inertia of General Matrices,” J. Math. Anal. Appl. 4, 72–84 (1962).
H. Weyl, The Classical Groups: Their Invariants and Representations (Princeton Univ. Press, Princeton, NJ, 1939; Inostrannaya Literatura, Moscow, 1947).
V. V. Kozlov and A. A. Karapetyan, “On the Stability Degree,” Diff. Uravn. 41(2), 186–192 (2005) [Diff. Eqns. 41, 195–201 (2005)].
F. R. Gantmacher, The Theory of Matrices (Nauka, Moscow, 1988; AMS Chelsea Publ., Providence, RI, 1998).
G. W. Hill, “On the Part of the Motion of the Lunar Perigee Which Is a Function of the Mean Motions of the Sun and Moon,” Acta Math. 8(1), 1–36 (1886).
V. V. Kozlov and D. V. Treshchev, Billiards: A Genetic Introduction to the Dynamics of Systems with Impacts (Mosk. Gos. Univ., Moscow, 1991; Am. Math. Soc., Providence, RI, 1991).
M. G. Krein, “On an Application of the Fixed-Point Principle in the Theory of Linear Transformations of Spaces with an Indefinite Metric,” Usp. Mat. Nauk 5(2), 180–190 (1950) [Am. Math. Soc. Transl., Ser. 2, 1, 27–35 (1955)].
S. V. Bolotin and V. V. Kozlov, “Asymptotic Solutions of Equations of Dynamics,” Vestn. Mosk. Univ., Ser 1: Mat., Mekh., No. 4, 84–89 (1980) [Mosc. Univ. Mech. Bull. 35 (3–4), 82–88 (1980)].
Author information
Authors and Affiliations
Additional information
Original Russian Text © V.V. Kozlov, 2010, published in Trudy Matematicheskogo Instituta imeni V.A. Steklova, 2010, Vol. 268, pp. 155–167.
Rights and permissions
About this article
Cite this article
Kozlov, V.V. Spectral properties of operators with polynomial invariants in real finite-dimensional spaces. Proc. Steklov Inst. Math. 268, 148–160 (2010). https://doi.org/10.1134/S0081543810010128
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0081543810010128