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The Disc Theorem for the Schur Complement of Two Class Submatrices with γ-Diagonally Dominant Properties

  • Guangqi Li (a1), Jianzhou Liu (a1) and Juan Zhang (a1) (a2)

The distribution for eigenvalues of Schur complement of matrices plays an important role in many mathematical problems. In this paper, we firstly present some criteria for H-matrix. Then as application, for two class matrices whose submatrices are γ-diagonally dominant and product γ-diagonally dominant, we show that the eigenvalues of the Schur complement are located in the Geršgorin discs and the Ostrowski discs of the original matrices under certain conditions.

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*Corresponding author. Email addresses: (J.-Z. Liu), (J. Zhang)
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Numerical Mathematics: Theory, Methods and Applications
  • ISSN: 1004-8979
  • EISSN: 2079-7338
  • URL: /core/journals/numerical-mathematics-theory-methods-and-applications
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