Korean Journal of Mathematics

  • 제16권3호
  • /
  • Pages.349-353
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  • 2008
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  • 1976-8605(pISSN)
  • /
  • 2288-1433(eISSN)
강원경기수학회 (The Kangwon-Kyungki Mathematical Society)
권호 표지

ON PROPERTIES OF QUASI-CLASS A OPERATORS

  • Lee, Jae Won (Department of Applied Mathematics Kumoh National Institute of Technology) ;
  • Jeon, In Ho (Department of Mathematics Education Seoul National University of Education)
  • 투고 : 2008.07.15
  • 발행 : 2008.09.30
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초록

Let the set of all quasi-class A operators for which $ker(A){\subseteq}ker(A^*)$ be denoted by $A{\in}{\mathcal{Q}}A^*$. In this paper it is proved that an operator $T{\in}{\mathcal{Q}}A^*$ is normal if and only if the Duggal transform of T is normal.

키워드

과제정보

연구 과제 주관 기관 : Kumoh National Institute of Technology