Journal of the Korean Mathematical Society (대한수학회지)

Korean Mathematical Society (대한수학회)
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SIGN PATTERNS OF IDEMPOTENT MATRICES

  • Hall, Frank J. (Department of Mathematics and Computer Science Georgia State University) ;
  • Li, Zhong-Shan (Department of Mathematics and Computer Science Georgia State University)
  • Published : 1999.03.01
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Abstract

Sign patterns of idempotent matrices, especially symmetric idempotent matrices, are investigated. A number of fundamental results are given and various constructions are presented. The sign patterns of symmetric idempotent matrices through order 5 are determined. Some open questions are also given.

Keywords

References

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