Journal of Jishou University(Natural Sciences Edition) ›› 2024, Vol. 45 ›› Issue (3): 1-8.DOI: 10.13438/j.cnki.jdzk.2024.03.001

• Mathematics •     Next Articles

Generalized S-α2 Type Block Diagonally Dominant Matrices and Its Spectrum

ZHU Kaixin,TUO Qing,HUANG Qi   

  1. (College of Mathematics and Statistics,Jishou University,Jishou 416000,Hunan China)
  • Online:2024-05-25 Published:2024-06-19

Abstract: A new judging criterion for a class of block diagonally dominant matrices is given by using the property of G-function and the technique of scaling and shrinking inequalities,and the inclusion field of the eigenvalues of the matrix is obtained.A numerical example is used to illustrate the validity and universality of the new judging criterion.

Key words: block H-matrix, G-function, eigenvalue, generalized S-α2 block diagonally dominant matrix

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