Explicit Factorization of Piecewise Constant Matrix Functions

被引:0
|
作者
Giorgadze, Grigori [1 ]
Spitkovsky, Ilya [2 ]
机构
[1] Tbilisi State Univ, Fac Exact & Nat Sci, 2 Chavchadze Ave, Tbilisi 0179, Georgia
[2] New York Univ Abu Dhabi, Div Sci & Math, Abu Dhabi 129188, U Arab Emirates
关键词
Piecewise constant matrix function; Factorization; Partial indices; Monodromy;
D O I
10.1007/s10883-025-09724-5
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Within the framework of differential Galois theory, we provide a solution to the factorization problem of piecewise constant matrix functions that arise from Fuchsian systems of differential equations. We calculate the partial indices of these matrix functions using the methods of the Riemann-Hilbert monodromy problem. This allows us to determine the explicit form of the factorization and understand the behavior of these matrix functions in relation to the underlying Fuchsian system of differential equations.
引用
收藏
页数:12
相关论文
共 50 条
  • [41] Numerical analysis of the factorization method for EIT with a piecewise constant uncertain background
    Haddar, Houssem
    Migliorati, Giovanni
    INVERSE PROBLEMS, 2013, 29 (06)
  • [42] A note on factorization of analytic matrix functions
    Lancaster, P
    Markus, A
    OPERATOR THEORY AND ANALYSIS, 2001, 122 : 323 - 330
  • [43] EFFICIENT FACTORIZATION OF MATRIX-FUNCTIONS
    SPITKOVSKII, IM
    TASHBAEV, AM
    IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII MATEMATIKA, 1989, (04): : 69 - 76
  • [44] MINIMAL FACTORIZATION OF RATIONAL MATRIX FUNCTIONS
    RAKOWSKI, M
    IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS, 1992, 39 (06): : 440 - 445
  • [45] On Approximate Spectral Factorization of Matrix Functions
    Lasha Ephremidze
    Gigla Janashia
    Edem Lagvilava
    Journal of Fourier Analysis and Applications, 2011, 17 : 976 - 990
  • [46] Factorization and approximation problems for matrix functions
    Peller, VV
    JOURNAL OF THE AMERICAN MATHEMATICAL SOCIETY, 1998, 11 (04) : 751 - 770
  • [47] On canonical factorization of rational matrix functions
    Gohberg, I
    Zucker, Y
    INTEGRAL EQUATIONS AND OPERATOR THEORY, 1996, 25 (01) : 73 - 93
  • [48] Nonnegative Matrix Factorization with Piecewise Smoothness Constraint for Hyperspectral Unmixing
    Jia, Sen
    Qian, Yun-Ta
    Ji, Zhen
    PROCEEDINGS OF 2008 INTERNATIONAL CONFERENCE ON WAVELET ANALYSIS AND PATTERN RECOGNITION, VOLS 1 AND 2, 2008, : 815 - +
  • [49] On Explicit Formulas of Hyperbolic Matrix Functions
    Laarichi, Y.
    Elkettani, Y.
    Gretete, D.
    Barmaki, M.
    MALAYSIAN JOURNAL OF MATHEMATICAL SCIENCES, 2023, 17 (02): : 201 - 210
  • [50] On the Riemann-Hilbert problem with a piecewise constant matrix
    Mityushev, Vladimir V.
    Rogosin, Sergei V.
    ZEITSCHRIFT FUR ANALYSIS UND IHRE ANWENDUNGEN, 2008, 27 (01): : 53 - 66