Journal of applied mathematics & informatics

The Korean Society for Computational and Applied Mathematics (한국전산응용수학회)
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THE RELATION BETWEEN THE NUMERICAL RANGE W(An) AND W(A) FOR THE 2 × 2 COMPLEX MATRIX

  • LEE, YONG HUN (Department of Mathematics, Institute of Pure and Applied Mathematics, Jeonbuk National University) ;
  • PARK, YEON HEE (Department of Mathematics Education, Institute of Pure and Applied Mathematics, Jeonbuk National University) ;
  • SHIN, HYE RAN (Department of Mathematics Education, Graduate School, Jeonbuk National University)
  • Received : 2020.07.23
  • Accepted : 2020.10.13
  • Published : 2021.01.30
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Abstract

In the paper, we investigate the representation of the numerical range W(An) for the 2 × 2 complex matrix A, in terms of the numerical range W(A) of the matrix A, and the elements of A or the eigenvalue of A.

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References

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