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Limit-point criteria for the matrix Sturm-Liouville operator and its powers

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Języki publikacji
EN
Abstrakty
EN
We consider matrix Sturm-Liouville operators generated by the formal expression [formula] in the space [formula]. Let the matrix functions P := P(x), Q := Q(x) and R := R(x) of order n (n ∈ N) be defined on I, P is a nondegenerate matrix, P and Q are Hermitian matrices for x ∈ I and the entries of the matrix functions[formula], Q and R are measurable on I and integrable on each of its closed finite subintervals. The main purpose of this paper is to find conditions on the matrices P, Q and R that ensure the realization of the limit-point case for the minimal closed symmetric operator generated by [formula]. In particular, we obtain limit-point conditions for Sturm-Liouville operators with matrix-valued distributional coefficients.
Rocznik
Strony
5--19
Opis fizyczny
Bibliogr. 23 poz.
Twórcy
  • Northern (Arctic) Federal University named after M.V. Lomonosov Severnaya Dvina Emb. 17, Arkhangelsk, 163002, Russia
Bibliografia
  • [1] R.L. Anderson, Limit-point and limit-circle criteria for a class of singular symmetric differential operators, Canad. J. Math. 28 (1976) 5, 905-914.
  • [2] F.V. Atkinson, Limit-n criteria of integral type, Proc. Roy. Soc. Edinburgh Sect. A 73 (1974/75) 11, 167-198.
  • [3] I.N. Braeutigam, K.A. Mirzoev, T.A. Safonova, An analog of Orlov’s theorem on the deficiency index of second-order differential operators, Math. Notes 97 (2015) 1-2, 300-303.
  • [4] M.S.P. Eastham, The deficiency index of a second-order differential system, J. London Math. Soc. 23 (1981) 2, 311-320.
  • [5] M.S.P. Eastham, K.J. Gould, Square-integrable solutions of a matrix differential expression, J. Math. Anal. Appl. 91 (1983) 2, 424-433.
  • [6] W.N. Everitt, M. Giertz, A critical class of examples concerning the integrable-square classification of ordinary differential equations, Proc. Roy. Soc. Edinburgh Sect. A 74A (1974/75) 22, 285-297.
  • [7] W.N. Everitt, A. Zettl, The number of integrable-square solutions of products of differential expressions, Proc. Roy. Soc. Edinburgh Sect. A 76 (1977), 215-226.
  • [8] W.D. Ewans, A. Zettl, Interval limit-point criteria for differential expressions and their powers, J. London Math. Soc. 15 (1977) 2, 119-133.
  • [9] G.A. Kalyabin, On the number of solutions of a self-adjoint system of second-order differential equations in L2(0, +ro), Functional Anal. Appl. 6 (1973) 3, 237-239.
  • [10] R.M. Kauffman, T.T. Read, A. Zettl, The deficiency index problem for powers of ordinary differential expressions, Springer-Verlag, Berlin, Heidelberg, New York, 1977.
  • [11] A.S. Kostenko, M.M. Malamud, D.D. Natyagailo, Matrix Schrodinger operator with 5-interactions, Math. Notes 100 (2016) 1, 49-65.
  • [12] V.B. Lidskii, On the number of solutions with integrable square of the system of differential equations —y" + P(t)y = Xy, Dokl. Akad. Nauk SSSR 95 (1954) 2, 217-220.
  • [13] M. Lesch, M. Malamud, On the deficiency indices and self-adjointness of symmetric Hamiltonian systems, J. Differential Equations 189 (2003), 556-615.
  • [14] K.A. Mirzoev, Sturm-Liouville operators, Trans. Moscow Math. Soc. 75 (2014), 281-299.
  • [15] K.A. Mirzoev, T.A. Safonova, Singular Sturm-Liouville operators with distribution potential on spaces of vector functions, Dokl. Math. 84 (2011) 3, 791-794.
  • [16] K.A. Mirzoev, T.A. Safonova, Singular Sturm-Liouville operators with nonsmooth potentials in a space of vector-functions, Ufim. Mat. Zh. 3 (2011) 3, 105-119.
  • [17] K.A. Mirzoev, T.A. Safonova, On the deficiency index of the vector-valued Sturm-Liouville operator, Math. Notes 99 (2016) 2, 290-303.
  • [18] M.A. Naimark, Linear Differential Operator, Nauka, Moscow, 1969; English transl. of 1st ed., Parts I, II, Frederick Ungar, New York, 1967, 1968.
  • [19] V.P. Serebryakov, The number of solutions with integrable square of a system of differential equations of Sturm-Liouville type, Differ. Equations 24 (1988) 10, 1147-1151.
  • [20] V.P. Serebryakov, Lp-properties of solutions to systems of second-order quasidifferential equations and perturbation of their coefficients on sets of positive measure, Differ. Equations 35 (1999) 7, 915-923.
  • [21] V.P. Serebryakov, The deficiency index of second-order matrix differential operators with rapidly oscillating coefficients, Russian Math. (Iz. VUZ) 3 (2000), 46-50.
  • [22] V.P. Serebryakov, L2-properties of solutions and ranks of radii of the limit matrix circles for nonselfadjoint systems of differential equations, Russ. J. Math. Phys. 13 (2006) 1, 79-93.
  • [23] Y.T. Sultanaev, O.V. Myakinova, On the deficiency indices of a singular differential operator of fourth order in the space of vector functions, Math. Notes 86 (2009) 6, 895-898.
Uwagi
PL
Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-c36d0190-2e46-49cc-8f1e-aa7205c5bc13
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